./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.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_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 72845188532fe6d4486465eb4d1c3f34d4b417b7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 08:23:43,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:23:43,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:23:43,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:23:43,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:23:43,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:23:43,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:23:43,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:23:43,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:23:43,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:23:43,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:23:43,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:23:43,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:23:43,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:23:43,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:23:43,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:23:43,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:23:43,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:23:43,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:23:43,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:23:43,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:23:43,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:23:43,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:23:43,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:23:43,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:23:43,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:23:43,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:23:43,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:23:43,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:23:43,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:23:43,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:23:43,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:23:43,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:23:43,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:23:43,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:23:43,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:23:43,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:23:43,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:23:43,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:23:43,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:23:43,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:23:43,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 08:23:43,648 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:23:43,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:23:43,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:23:43,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:23:43,649 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:23:43,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:23:43,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:23:43,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 08:23:43,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:23:43,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:23:43,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:23:43,650 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 08:23:43,651 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 08:23:43,651 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 08:23:43,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:23:43,651 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 08:23:43,651 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 08:23:43,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:23:43,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:23:43,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:23:43,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:23:43,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:23:43,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:23:43,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:23:43,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:23:43,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:23:43,653 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 08:23:43,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 08:23:43,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 08:23:43,654 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_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 -> 72845188532fe6d4486465eb4d1c3f34d4b417b7 [2019-11-20 08:23:43,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:23:43,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:23:43,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:23:43,852 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:23:43,854 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:23:43,854 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2019-11-20 08:23:43,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/data/f13495e56/f0a9e09af06e4e3d8663a41a4a6c032f/FLAG30076f04d [2019-11-20 08:23:44,393 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:23:44,394 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2019-11-20 08:23:44,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/data/f13495e56/f0a9e09af06e4e3d8663a41a4a6c032f/FLAG30076f04d [2019-11-20 08:23:44,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/bin/uautomizer/data/f13495e56/f0a9e09af06e4e3d8663a41a4a6c032f [2019-11-20 08:23:44,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:23:44,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 08:23:44,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:23:44,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:23:44,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:23:44,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:23:44" (1/1) ... [2019-11-20 08:23:44,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c32313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:44, skipping insertion in model container [2019-11-20 08:23:44,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:23:44" (1/1) ... [2019-11-20 08:23:44,741 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:23:44,791 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:23:45,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:23:45,340 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:23:45,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:23:45,518 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:23:45,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45 WrapperNode [2019-11-20 08:23:45,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:23:45,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:23:45,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:23:45,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:23:45,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... [2019-11-20 08:23:45,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:23:45,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:23:45,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:23:45,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:23:45,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 08:23:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:23:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 08:23:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 08:23:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 08:23:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 08:23:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 08:23:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 08:23:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 08:23:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 08:23:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 08:23:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 08:23:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 08:23:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 08:23:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 08:23:45,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 08:23:45,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 08:23:45,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 08:23:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 08:23:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 08:23:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 08:23:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 08:23:45,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 08:23:45,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 08:23:45,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 08:23:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 08:23:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 08:23:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 08:23:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 08:23:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 08:23:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 08:23:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 08:23:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 08:23:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 08:23:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 08:23:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 08:23:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 08:23:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 08:23:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 08:23:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 08:23:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 08:23:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2019-11-20 08:23:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2019-11-20 08:23:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2019-11-20 08:23:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2019-11-20 08:23:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 08:23:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 08:23:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 08:23:45,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 08:23:45,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 08:23:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 08:23:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 08:23:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 08:23:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 08:23:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 08:23:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 08:23:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 08:23:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 08:23:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 08:23:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 08:23:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 08:23:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 08:23:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 08:23:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 08:23:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 08:23:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 08:23:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 08:23:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 08:23:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 08:23:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 08:23:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 08:23:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 08:23:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 08:23:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 08:23:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 08:23:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 08:23:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 08:23:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 08:23:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 08:23:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 08:23:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 08:23:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 08:23:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 08:23:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 08:23:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 08:23:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 08:23:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 08:23:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 08:23:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 08:23:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 08:23:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 08:23:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 08:23:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 08:23:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 08:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 08:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 08:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 08:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 08:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 08:23:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 08:23:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 08:23:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 08:23:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 08:23:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 08:23:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 08:23:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 08:23:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 08:23:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 08:23:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 08:23:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 08:23:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 08:23:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 08:23:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 08:23:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 08:23:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 08:23:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 08:23:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 08:23:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 08:23:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 08:23:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 08:23:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 08:23:45,731 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 08:23:45,731 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 08:23:45,732 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 08:23:45,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 08:23:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 08:23:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 08:23:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 08:23:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 08:23:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 08:23:45,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 08:23:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 08:23:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 08:23:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 08:23:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 08:23:45,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 08:23:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 08:23:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 08:23:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 08:23:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 08:23:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 08:23:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 08:23:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 08:23:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 08:23:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 08:23:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 08:23:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 08:23:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 08:23:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 08:23:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 08:23:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 08:23:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 08:23:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 08:23:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 08:23:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 08:23:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 08:23:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 08:23:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 08:23:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 08:23:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 08:23:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 08:23:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:23:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 08:23:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 08:23:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 08:23:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 08:23:46,337 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 08:23:46,756 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 08:23:47,289 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:23:47,289 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-20 08:23:47,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:47 BoogieIcfgContainer [2019-11-20 08:23:47,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:23:47,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:23:47,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:23:47,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:23:47,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:23:44" (1/3) ... [2019-11-20 08:23:47,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3822ca46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:23:47, skipping insertion in model container [2019-11-20 08:23:47,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:45" (2/3) ... [2019-11-20 08:23:47,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3822ca46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:23:47, skipping insertion in model container [2019-11-20 08:23:47,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:47" (3/3) ... [2019-11-20 08:23:47,300 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2019-11-20 08:23:47,309 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:23:47,318 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 86 error locations. [2019-11-20 08:23:47,328 INFO L249 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2019-11-20 08:23:47,346 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:23:47,347 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 08:23:47,347 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:23:47,347 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:23:47,347 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:23:47,347 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:23:47,348 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:23:47,348 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:23:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2019-11-20 08:23:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 08:23:47,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:47,385 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] [2019-11-20 08:23:47,386 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:47,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:47,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1197645573, now seen corresponding path program 1 times [2019-11-20 08:23:47,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:47,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2059378967] [2019-11-20 08:23:47,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:47,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:23:47,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:47,758 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 08:23:47,758 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:47,856 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 08:23:47,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2059378967] [2019-11-20 08:23:47,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:47,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 08:23:47,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534244612] [2019-11-20 08:23:47,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 08:23:47,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:47,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 08:23:47,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:23:47,882 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 5 states. [2019-11-20 08:23:48,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:48,005 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2019-11-20 08:23:48,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 08:23:48,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-20 08:23:48,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:48,020 INFO L225 Difference]: With dead ends: 94 [2019-11-20 08:23:48,020 INFO L226 Difference]: Without dead ends: 91 [2019-11-20 08:23:48,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 08:23:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-20 08:23:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2019-11-20 08:23:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-20 08:23:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2019-11-20 08:23:48,088 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2019-11-20 08:23:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:48,088 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2019-11-20 08:23:48,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 08:23:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2019-11-20 08:23:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 08:23:48,089 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:48,090 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] [2019-11-20 08:23:48,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:48,293 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:48,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:48,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1001132068, now seen corresponding path program 1 times [2019-11-20 08:23:48,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:48,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1106411632] [2019-11-20 08:23:48,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:48,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 08:23:48,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:48,691 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:48,691 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 08:23:48,692 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:48,719 INFO L567 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-11-20 08:23:48,719 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:23:48,720 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2019-11-20 08:23:48,736 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-20 08:23:48,736 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:48,742 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:48,742 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:23:48,742 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:7 [2019-11-20 08:23:48,761 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 08:23:48,761 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:48,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-20 08:23:48,920 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2019-11-20 08:23:48,921 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:23:48,950 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:48,951 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:23:48,951 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:32 [2019-11-20 08:23:49,040 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 08:23:49,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1106411632] [2019-11-20 08:23:49,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:49,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 08:23:49,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768878349] [2019-11-20 08:23:49,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:23:49,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:49,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:23:49,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:23:49,043 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2019-11-20 08:23:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:49,406 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2019-11-20 08:23:49,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:23:49,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-20 08:23:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:49,408 INFO L225 Difference]: With dead ends: 120 [2019-11-20 08:23:49,408 INFO L226 Difference]: Without dead ends: 120 [2019-11-20 08:23:49,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:23:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-11-20 08:23:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2019-11-20 08:23:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 08:23:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2019-11-20 08:23:49,420 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 20 [2019-11-20 08:23:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:49,420 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2019-11-20 08:23:49,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:23:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2019-11-20 08:23:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 08:23:49,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:49,422 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] [2019-11-20 08:23:49,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:49,633 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1001132067, now seen corresponding path program 1 times [2019-11-20 08:23:49,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:49,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1716368499] [2019-11-20 08:23:49,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:49,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 08:23:49,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:49,952 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 08:23:49,953 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 08:23:49,953 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:49,983 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-11-20 08:23:49,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:23:49,985 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:23:49,985 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-11-20 08:23:49,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:23:50,009 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-20 08:23:50,009 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:50,011 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:50,011 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:23:50,011 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:3 [2019-11-20 08:23:50,018 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 08:23:50,018 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:50,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:23:50,087 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2019-11-20 08:23:50,087 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:50,093 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:50,093 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:23:50,093 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:12 [2019-11-20 08:23:50,115 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 08:23:50,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1716368499] [2019-11-20 08:23:50,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:50,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 08:23:50,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125767446] [2019-11-20 08:23:50,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 08:23:50,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 08:23:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:23:50,117 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand 5 states. [2019-11-20 08:23:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:50,295 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2019-11-20 08:23:50,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 08:23:50,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-20 08:23:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:50,298 INFO L225 Difference]: With dead ends: 129 [2019-11-20 08:23:50,298 INFO L226 Difference]: Without dead ends: 125 [2019-11-20 08:23:50,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:23:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-20 08:23:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2019-11-20 08:23:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 08:23:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2019-11-20 08:23:50,321 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2019-11-20 08:23:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:50,322 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2019-11-20 08:23:50,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 08:23:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2019-11-20 08:23:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 08:23:50,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:50,323 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] [2019-11-20 08:23:50,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:50,526 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:50,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1183679111, now seen corresponding path program 1 times [2019-11-20 08:23:50,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:50,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [463404886] [2019-11-20 08:23:50,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:50,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:23:50,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:50,795 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 08:23:50,795 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:50,833 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 08:23:50,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [463404886] [2019-11-20 08:23:50,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:50,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 08:23:50,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797593336] [2019-11-20 08:23:50,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 08:23:50,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:50,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 08:23:50,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:23:50,835 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 5 states. [2019-11-20 08:23:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:50,878 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2019-11-20 08:23:50,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 08:23:50,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 08:23:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:50,880 INFO L225 Difference]: With dead ends: 104 [2019-11-20 08:23:50,880 INFO L226 Difference]: Without dead ends: 104 [2019-11-20 08:23:50,881 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 08:23:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-20 08:23:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-20 08:23:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-20 08:23:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2019-11-20 08:23:50,887 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2019-11-20 08:23:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:50,888 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2019-11-20 08:23:50,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 08:23:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2019-11-20 08:23:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 08:23:50,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:50,892 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] [2019-11-20 08:23:51,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:51,098 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash 15252322, now seen corresponding path program 1 times [2019-11-20 08:23:51,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:51,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [855863624] [2019-11-20 08:23:51,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:51,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:23:51,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:51,415 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 08:23:51,416 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:51,548 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 08:23:51,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [855863624] [2019-11-20 08:23:51,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:51,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-20 08:23:51,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056344206] [2019-11-20 08:23:51,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 08:23:51,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:51,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 08:23:51,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:23:51,550 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 10 states. [2019-11-20 08:23:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:51,628 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2019-11-20 08:23:51,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:23:51,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-20 08:23:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:51,632 INFO L225 Difference]: With dead ends: 118 [2019-11-20 08:23:51,632 INFO L226 Difference]: Without dead ends: 114 [2019-11-20 08:23:51,633 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-20 08:23:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-20 08:23:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2019-11-20 08:23:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-20 08:23:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2019-11-20 08:23:51,648 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2019-11-20 08:23:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:51,648 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2019-11-20 08:23:51,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 08:23:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2019-11-20 08:23:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 08:23:51,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:51,649 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] [2019-11-20 08:23:51,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:51,850 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1960653489, now seen corresponding path program 1 times [2019-11-20 08:23:51,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:51,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [255218465] [2019-11-20 08:23:51,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:52,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 08:23:52,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:52,243 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 08:23:52,243 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:52,336 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 08:23:52,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255218465] [2019-11-20 08:23:52,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:52,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-11-20 08:23:52,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339027474] [2019-11-20 08:23:52,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 08:23:52,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:52,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 08:23:52,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:23:52,338 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 9 states. [2019-11-20 08:23:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:52,587 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2019-11-20 08:23:52,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:23:52,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2019-11-20 08:23:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:52,589 INFO L225 Difference]: With dead ends: 106 [2019-11-20 08:23:52,589 INFO L226 Difference]: Without dead ends: 106 [2019-11-20 08:23:52,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:23:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-20 08:23:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2019-11-20 08:23:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 08:23:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2019-11-20 08:23:52,598 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 23 [2019-11-20 08:23:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:52,598 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2019-11-20 08:23:52,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 08:23:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2019-11-20 08:23:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 08:23:52,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:52,604 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] [2019-11-20 08:23:52,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:52,810 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:52,810 INFO L82 PathProgramCache]: Analyzing trace with hash 650716283, now seen corresponding path program 1 times [2019-11-20 08:23:52,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:52,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [996697369] [2019-11-20 08:23:52,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:53,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:23:53,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:53,074 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 08:23:53,074 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:53,076 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:53,076 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:23:53,077 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:23:53,120 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 08:23:53,120 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:53,180 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 08:23:53,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [996697369] [2019-11-20 08:23:53,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:53,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2019-11-20 08:23:53,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082981984] [2019-11-20 08:23:53,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:23:53,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:23:53,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:23:53,182 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 6 states. [2019-11-20 08:23:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:53,388 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2019-11-20 08:23:53,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:23:53,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-20 08:23:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:53,390 INFO L225 Difference]: With dead ends: 108 [2019-11-20 08:23:53,390 INFO L226 Difference]: Without dead ends: 108 [2019-11-20 08:23:53,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:23:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-20 08:23:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2019-11-20 08:23:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 08:23:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2019-11-20 08:23:53,396 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 24 [2019-11-20 08:23:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:53,396 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2019-11-20 08:23:53,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:23:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2019-11-20 08:23:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 08:23:53,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:53,403 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] [2019-11-20 08:23:53,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:53,606 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:53,607 INFO L82 PathProgramCache]: Analyzing trace with hash 145157658, now seen corresponding path program 1 times [2019-11-20 08:23:53,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:53,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1720033685] [2019-11-20 08:23:53,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:53,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:23:53,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:53,825 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 08:23:53,825 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:53,855 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 08:23:53,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1720033685] [2019-11-20 08:23:53,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:53,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-20 08:23:53,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023617625] [2019-11-20 08:23:53,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:23:53,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:53,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:23:53,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:23:53,856 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 6 states. [2019-11-20 08:23:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:23:53,927 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2019-11-20 08:23:53,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:23:53,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-20 08:23:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:23:53,929 INFO L225 Difference]: With dead ends: 85 [2019-11-20 08:23:53,929 INFO L226 Difference]: Without dead ends: 83 [2019-11-20 08:23:53,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:23:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-20 08:23:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2019-11-20 08:23:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-20 08:23:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2019-11-20 08:23:53,933 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 24 [2019-11-20 08:23:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:23:53,933 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2019-11-20 08:23:53,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:23:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2019-11-20 08:23:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 08:23:53,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:23:53,935 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] [2019-11-20 08:23:54,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:23:54,136 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:23:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:23:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1292376138, now seen corresponding path program 1 times [2019-11-20 08:23:54,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:23:54,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [683565820] [2019-11-20 08:23:54,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:23:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:23:54,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 08:23:54,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:23:54,406 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 08:23:54,406 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 08:23:54,406 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:54,427 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-11-20 08:23:54,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:23:54,429 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:23:54,429 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-11-20 08:23:54,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:23:54,540 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:23:54,540 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-20 08:23:54,541 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:23:54,567 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 08:23:54,567 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:23:54,568 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-20 08:23:54,745 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 08:23:54,745 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:23:55,145 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 08:23:55,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [683565820] [2019-11-20 08:23:55,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:23:55,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2019-11-20 08:23:55,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558648081] [2019-11-20 08:23:55,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 08:23:55,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:23:55,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 08:23:55,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-20 08:23:55,148 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 14 states. [2019-11-20 08:23:55,763 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-20 08:23:56,342 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-20 08:23:56,769 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-20 08:24:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:24:01,261 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2019-11-20 08:24:01,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:24:01,262 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2019-11-20 08:24:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:24:01,262 INFO L225 Difference]: With dead ends: 81 [2019-11-20 08:24:01,262 INFO L226 Difference]: Without dead ends: 81 [2019-11-20 08:24:01,263 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2019-11-20 08:24:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-20 08:24:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-20 08:24:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-20 08:24:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2019-11-20 08:24:01,272 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 28 [2019-11-20 08:24:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:24:01,272 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2019-11-20 08:24:01,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 08:24:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2019-11-20 08:24:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 08:24:01,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:24:01,274 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] [2019-11-20 08:24:01,476 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:24:01,477 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:24:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:24:01,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1292376139, now seen corresponding path program 1 times [2019-11-20 08:24:01,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:24:01,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [864892378] [2019-11-20 08:24:01,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:24:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:24:01,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-20 08:24:01,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:24:01,732 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:24:01,733 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 08:24:01,733 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:24:01,763 INFO L567 ElimStorePlain]: treesize reduction 10, result has 75.0 percent of original size [2019-11-20 08:24:01,819 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 08:24:01,820 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 08:24:01,820 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:24:01,871 INFO L567 ElimStorePlain]: treesize reduction 10, result has 80.0 percent of original size [2019-11-20 08:24:01,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:01,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,873 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:24:01,873 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:40 [2019-11-20 08:24:01,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:01,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:01,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:01,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:01,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:01,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:01,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:02,107 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2019-11-20 08:24:04,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:04,290 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:24:04,290 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2019-11-20 08:24:04,291 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:24:04,313 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:24:04,314 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2019-11-20 08:24:04,314 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:24:04,339 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:24:04,339 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 50 [2019-11-20 08:24:04,340 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 08:24:04,392 INFO L567 ElimStorePlain]: treesize reduction 57, result has 26.9 percent of original size [2019-11-20 08:24:04,396 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-20 08:24:04,396 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 08:24:04,410 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:24:04,410 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:24:04,411 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:97, output treesize:11 [2019-11-20 08:24:04,561 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 08:24:04,562 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:24:04,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:06,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:06,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:06,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:06,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:06,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:24:06,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:06,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:06,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:09,416 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-11-20 08:24:09,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:24:10,198 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 08:24:10,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [864892378] [2019-11-20 08:24:10,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:24:10,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2019-11-20 08:24:10,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54188888] [2019-11-20 08:24:10,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 08:24:10,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:24:10,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 08:24:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=169, Unknown=3, NotChecked=0, Total=210 [2019-11-20 08:24:10,200 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 15 states. [2019-11-20 08:24:18,745 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-20 08:24:20,975 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_probe3_6_~a.base_BEFORE_CALL_12 (_ BitVec 32)) (v_probe3_6_~a.offset_BEFORE_CALL_6 (_ BitVec 32)) (|v_ldv_malloc_#t~malloc12.base_29| (_ BitVec 32)) (ldv_malloc_~size (_ BitVec 32))) (let ((.cse0 (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)))) (or (exists ((v_prenex_3 (_ BitVec 32)) (v_ldv_malloc_~size_47 (_ BitVec 32))) (and (not (bvsle (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)) (select (store |c_old(#length)| v_prenex_3 v_ldv_malloc_~size_47) v_probe3_6_~a.base_BEFORE_CALL_12))) (= (select |c_old(#valid)| v_prenex_3) (_ bv0 1)))) (not (bvsle (_ bv0 32) v_probe3_6_~a.offset_BEFORE_CALL_6)) (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_29|) (_ bv0 1))) (not (bvsle v_probe3_6_~a.offset_BEFORE_CALL_6 .cse0)) (bvsle .cse0 (select (store |c_#length| |v_ldv_malloc_#t~malloc12.base_29| ldv_malloc_~size) v_probe3_6_~a.base_BEFORE_CALL_12))))) (forall ((v_probe3_6_~a.base_BEFORE_CALL_12 (_ BitVec 32)) (v_probe3_6_~a.offset_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse1 (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)))) (or (bvsle .cse1 (select |c_#length| v_probe3_6_~a.base_BEFORE_CALL_12)) (exists ((v_prenex_3 (_ BitVec 32)) (v_ldv_malloc_~size_47 (_ BitVec 32))) (and (not (bvsle (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)) (select (store |c_old(#length)| v_prenex_3 v_ldv_malloc_~size_47) v_probe3_6_~a.base_BEFORE_CALL_12))) (= (select |c_old(#valid)| v_prenex_3) (_ bv0 1)))) (not (bvsle (_ bv0 32) v_probe3_6_~a.offset_BEFORE_CALL_6)) (not (bvsle v_probe3_6_~a.offset_BEFORE_CALL_6 .cse1))))) (= |c_~#a6~0.offset| (_ bv0 32)) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (exists ((v_prenex_4 (_ BitVec 32))) (= (select |c_old(#valid)| v_prenex_4) (_ bv0 1))) (exists ((|~#ldv_global_msg_list~0.base| (_ BitVec 32))) (and (or (= |c_~#a6~0.base| |~#ldv_global_msg_list~0.base|) (= (bvadd (select |c_#length| |~#ldv_global_msg_list~0.base|) (_ bv4294967288 32)) (_ bv0 32))) (= (bvadd (select |c_#valid| |~#ldv_global_msg_list~0.base|) (_ bv1 1)) (_ bv0 1)) (or (= (_ bv0 1) (select |c_#valid| (_ bv0 32))) (= (_ bv0 32) |~#ldv_global_msg_list~0.base|) (= |c_~#a6~0.base| (_ bv0 32))))) (= (_ bv1 1) (select |c_#valid| |c_~#a6~0.base|)) (= (_ bv4 32) (select |c_#length| |c_~#a6~0.base|))) is different from false [2019-11-20 08:24:27,409 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 12 [2019-11-20 08:24:31,554 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_probe3_6_~a.base_BEFORE_CALL_12 (_ BitVec 32)) (v_probe3_6_~a.offset_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse0 (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)))) (or (bvsle .cse0 (select |c_#length| v_probe3_6_~a.base_BEFORE_CALL_12)) (exists ((v_prenex_3 (_ BitVec 32)) (v_ldv_malloc_~size_47 (_ BitVec 32))) (and (not (bvsle (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)) (select (store |c_old(#length)| v_prenex_3 v_ldv_malloc_~size_47) v_probe3_6_~a.base_BEFORE_CALL_12))) (= (select |c_old(#valid)| v_prenex_3) (_ bv0 1)))) (not (bvsle (_ bv0 32) v_probe3_6_~a.offset_BEFORE_CALL_6)) (not (bvsle v_probe3_6_~a.offset_BEFORE_CALL_6 .cse0))))) (= c_probe3_6_~a.offset (_ bv0 32)) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (= (bvadd (select |c_#length| c_probe3_6_~a.base) (_ bv4294967292 32)) (_ bv0 32)) (exists ((v_prenex_4 (_ BitVec 32))) (= (select |c_old(#valid)| v_prenex_4) (_ bv0 1)))) is different from false [2019-11-20 08:24:33,634 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-11-20 08:25:09,843 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_probe3_6_~a.base_BEFORE_CALL_12 (_ BitVec 32)) (v_probe3_6_~a.offset_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse0 (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)))) (or (bvsle .cse0 (select |c_#length| v_probe3_6_~a.base_BEFORE_CALL_12)) (exists ((v_prenex_3 (_ BitVec 32)) (v_ldv_malloc_~size_47 (_ BitVec 32))) (and (not (bvsle (bvadd v_probe3_6_~a.offset_BEFORE_CALL_6 (_ bv4 32)) (select (store |c_old(#length)| v_prenex_3 v_ldv_malloc_~size_47) v_probe3_6_~a.base_BEFORE_CALL_12))) (= (select |c_old(#valid)| v_prenex_3) (_ bv0 1)))) (not (bvsle (_ bv0 32) v_probe3_6_~a.offset_BEFORE_CALL_6)) (not (bvsle v_probe3_6_~a.offset_BEFORE_CALL_6 .cse0))))) (exists ((v_probe3_6_~a.base_BEFORE_CALL_8 (_ BitVec 32))) (= (bvadd (select |c_#length| v_probe3_6_~a.base_BEFORE_CALL_8) (_ bv4294967292 32)) (_ bv0 32))) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (= |c_#valid| |c_old(#valid)|) (exists ((v_prenex_4 (_ BitVec 32))) (= (select |c_old(#valid)| v_prenex_4) (_ bv0 1))) (= |c_old(#length)| |c_#length|)) is different from false [2019-11-20 08:25:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:25:26,218 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2019-11-20 08:25:26,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 08:25:26,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2019-11-20 08:25:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:25:26,220 INFO L225 Difference]: With dead ends: 79 [2019-11-20 08:25:26,220 INFO L226 Difference]: Without dead ends: 62 [2019-11-20 08:25:26,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=118, Invalid=389, Unknown=11, NotChecked=132, Total=650 [2019-11-20 08:25:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-20 08:25:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2019-11-20 08:25:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-20 08:25:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2019-11-20 08:25:26,225 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 28 [2019-11-20 08:25:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:25:26,225 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2019-11-20 08:25:26,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 08:25:26,225 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2019-11-20 08:25:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 08:25:26,226 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:25:26,226 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] [2019-11-20 08:25:26,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:25:26,430 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, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err1REQUIRES_VIOLATION, probe3_6Err0REQUIRES_VIOLATION, probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 08:25:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:25:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash -18189035, now seen corresponding path program 1 times [2019-11-20 08:25:26,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:25:26,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1831401128] [2019-11-20 08:25:26,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4036ae99-a57d-4b8b-96f5-d81760341fd9/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 08:25:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:25:26,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 08:25:26,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:25:26,708 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 08:25:26,709 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 08:25:26,709 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:26,751 INFO L567 ElimStorePlain]: treesize reduction 10, result has 77.8 percent of original size [2019-11-20 08:25:26,767 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:26,767 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 08:25:26,767 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:26,829 INFO L567 ElimStorePlain]: treesize reduction 10, result has 80.0 percent of original size [2019-11-20 08:25:26,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,831 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 08:25:26,831 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:40 [2019-11-20 08:25:26,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:26,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:26,928 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:26,928 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 41 [2019-11-20 08:25:26,929 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:26,935 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-11-20 08:25:26,936 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:26,945 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:26,948 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2019-11-20 08:25:26,948 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:26,973 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:26,973 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2019-11-20 08:25:26,973 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:26,980 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2019-11-20 08:25:26,980 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:27,039 INFO L567 ElimStorePlain]: treesize reduction 118, result has 11.3 percent of original size [2019-11-20 08:25:27,043 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-20 08:25:27,043 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:27,051 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:27,052 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:25:27,052 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:169, output treesize:10 [2019-11-20 08:25:29,116 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-20 08:25:29,116 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,123 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,126 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 08:25:29,126 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,131 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,132 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,132 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:15, output treesize:3 [2019-11-20 08:25:29,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:29,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:29,162 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,169 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-11-20 08:25:29,169 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,180 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,204 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,205 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 59 [2019-11-20 08:25:29,205 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,222 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2019-11-20 08:25:29,223 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,235 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,253 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,253 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 61 [2019-11-20 08:25:29,254 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,263 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,288 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,288 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 56 [2019-11-20 08:25:29,289 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:25:29,302 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2019-11-20 08:25:29,303 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,422 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2019-11-20 08:25:29,422 INFO L567 ElimStorePlain]: treesize reduction 139, result has 39.3 percent of original size [2019-11-20 08:25:29,447 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,447 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2019-11-20 08:25:29,448 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,458 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:25:29,458 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2019-11-20 08:25:29,459 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,462 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 08:25:29,464 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2019-11-20 08:25:29,465 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,494 INFO L567 ElimStorePlain]: treesize reduction 26, result has 40.9 percent of original size [2019-11-20 08:25:29,494 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:25:29,495 INFO L221 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:251, output treesize:9 [2019-11-20 08:25:29,513 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 08:25:29,514 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:25:29,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:25:31,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:31,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:31,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-20 08:25:31,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-20 08:25:31,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:25:31,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-20 08:25:31,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-20 08:25:31,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2019-11-20 08:25:31,944 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 15 [2019-11-20 08:25:31,949 INFO L392 ElimStorePlain]: Different costs {2=[|v_old(#length)_BEFORE_CALL_5|], 15=[|v_old(#valid)_BEFORE_CALL_5|]} [2019-11-20 08:25:32,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:25:32,153 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) 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.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 08:25:32,156 INFO L168 Benchmark]: Toolchain (without parser) took 107430.57 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.3 MB). Free memory was 947.4 MB in the beginning and 991.9 MB in the end (delta: -44.5 MB). Peak memory consumption was 178.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:25:32,157 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:25:32,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -122.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:25:32,158 INFO L168 Benchmark]: Boogie Preprocessor took 99.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:25:32,158 INFO L168 Benchmark]: RCFGBuilder took 1671.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 950.3 MB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:25:32,158 INFO L168 Benchmark]: TraceAbstraction took 104862.57 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 114.3 MB). Free memory was 950.3 MB in the beginning and 991.9 MB in the end (delta: -41.6 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:25:32,160 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 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 792.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -122.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 99.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1671.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 950.3 MB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 104862.57 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 114.3 MB). Free memory was 950.3 MB in the beginning and 991.9 MB in the end (delta: -41.6 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...