./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a88b43a3 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 902bca7b1502ca5dcb44bb7e7d9bc6d169c57d43 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-a88b43a [2019-11-20 12:10:40,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 12:10:40,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 12:10:40,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 12:10:40,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 12:10:40,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 12:10:40,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 12:10:40,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 12:10:40,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 12:10:40,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 12:10:40,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 12:10:40,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 12:10:40,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 12:10:40,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 12:10:40,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 12:10:40,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 12:10:40,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 12:10:40,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 12:10:40,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 12:10:40,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 12:10:40,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 12:10:40,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 12:10:40,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 12:10:40,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 12:10:40,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 12:10:40,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 12:10:40,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 12:10:40,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 12:10:40,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 12:10:40,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 12:10:40,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 12:10:40,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 12:10:40,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 12:10:40,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 12:10:40,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 12:10:40,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 12:10:40,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 12:10:40,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 12:10:40,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 12:10:40,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 12:10:40,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 12:10:40,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-20 12:10:40,429 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 12:10:40,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 12:10:40,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 12:10:40,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 12:10:40,432 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 12:10:40,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 12:10:40,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 12:10:40,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 12:10:40,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 12:10:40,434 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 12:10:40,435 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 12:10:40,436 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 12:10:40,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 12:10:40,436 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 12:10:40,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 12:10:40,437 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 12:10:40,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 12:10:40,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 12:10:40,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 12:10:40,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 12:10:40,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 12:10:40,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 12:10:40,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 12:10:40,439 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 12:10:40,440 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 12:10:40,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 12:10:40,440 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 902bca7b1502ca5dcb44bb7e7d9bc6d169c57d43 [2019-11-20 12:10:40,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 12:10:40,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 12:10:40,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 12:10:40,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 12:10:40,778 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 12:10:40,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2019-11-20 12:10:40,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/835591621/57b5b74c073142c1a69acd1b89bc9ac0/FLAGdce68b089 [2019-11-20 12:10:41,441 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 12:10:41,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2019-11-20 12:10:41,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/835591621/57b5b74c073142c1a69acd1b89bc9ac0/FLAGdce68b089 [2019-11-20 12:10:41,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/835591621/57b5b74c073142c1a69acd1b89bc9ac0 [2019-11-20 12:10:41,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 12:10:41,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 12:10:41,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 12:10:41,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 12:10:41,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 12:10:41,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:41" (1/1) ... [2019-11-20 12:10:41,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d93496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:41, skipping insertion in model container [2019-11-20 12:10:41,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:41" (1/1) ... [2019-11-20 12:10:41,715 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 12:10:41,789 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 12:10:42,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 12:10:42,383 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 12:10:42,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 12:10:42,561 INFO L192 MainTranslator]: Completed translation [2019-11-20 12:10:42,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42 WrapperNode [2019-11-20 12:10:42,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 12:10:42,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 12:10:42,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 12:10:42,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 12:10:42,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... [2019-11-20 12:10:42,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 12:10:42,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 12:10:42,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 12:10:42,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 12:10:42,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 12:10:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 12:10:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 12:10:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 12:10:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 12:10:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 12:10:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 12:10:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 12:10:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 12:10:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 12:10:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 12:10:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 12:10:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 12:10:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 12:10:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 12:10:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 12:10:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 12:10:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 12:10:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 12:10:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 12:10:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 12:10:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 12:10:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 12:10:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 12:10:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 12:10:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 12:10:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 12:10:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 12:10:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 12:10:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 12:10:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 12:10:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 12:10:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 12:10:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 12:10:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 12:10:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 12:10:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 12:10:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 12:10:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 12:10:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 12:10:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 12:10:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2019-11-20 12:10:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2019-11-20 12:10:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 12:10:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 12:10:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 12:10:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 12:10:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 12:10:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 12:10:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 12:10:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 12:10:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 12:10:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 12:10:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 12:10:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 12:10:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 12:10:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 12:10:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 12:10:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 12:10:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 12:10:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 12:10:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 12:10:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 12:10:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 12:10:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 12:10:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 12:10:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 12:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 12:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 12:10:42,762 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 12:10:42,762 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 12:10:42,762 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 12:10:42,762 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 12:10:42,763 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 12:10:42,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 12:10:42,763 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 12:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 12:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 12:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 12:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 12:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 12:10:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 12:10:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 12:10:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 12:10:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 12:10:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 12:10:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 12:10:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 12:10:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 12:10:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 12:10:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 12:10:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 12:10:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 12:10:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 12:10:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 12:10:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 12:10:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 12:10:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 12:10:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 12:10:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 12:10:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 12:10:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 12:10:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 12:10:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 12:10:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 12:10:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 12:10:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 12:10:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 12:10:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 12:10:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 12:10:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 12:10:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 12:10:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 12:10:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 12:10:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 12:10:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 12:10:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 12:10:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 12:10:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 12:10:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 12:10:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 12:10:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 12:10:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 12:10:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 12:10:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 12:10:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 12:10:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 12:10:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 12:10:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 12:10:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 12:10:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 12:10:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 12:10:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 12:10:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 12:10:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 12:10:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 12:10:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 12:10:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 12:10:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 12:10:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-20 12:10:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2019-11-20 12:10:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2019-11-20 12:10:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 12:10:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 12:10:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 12:10:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 12:10:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 12:10:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 12:10:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 12:10:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 12:10:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 12:10:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 12:10:43,461 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 12:10:43,906 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 12:10:44,498 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 12:10:44,498 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 12:10:44,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:44 BoogieIcfgContainer [2019-11-20 12:10:44,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 12:10:44,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 12:10:44,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 12:10:44,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 12:10:44,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:41" (1/3) ... [2019-11-20 12:10:44,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e1aa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:44, skipping insertion in model container [2019-11-20 12:10:44,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:42" (2/3) ... [2019-11-20 12:10:44,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e1aa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:44, skipping insertion in model container [2019-11-20 12:10:44,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:44" (3/3) ... [2019-11-20 12:10:44,509 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-2.i [2019-11-20 12:10:44,520 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 12:10:44,532 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 90 error locations. [2019-11-20 12:10:44,545 INFO L249 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2019-11-20 12:10:44,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 12:10:44,568 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 12:10:44,568 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 12:10:44,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 12:10:44,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 12:10:44,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 12:10:44,569 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 12:10:44,569 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 12:10:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2019-11-20 12:10:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 12:10:44,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:44,615 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 12:10:44,617 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:10:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:44,624 INFO L82 PathProgramCache]: Analyzing trace with hash 597436025, now seen corresponding path program 1 times [2019-11-20 12:10:44,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:44,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [524716807] [2019-11-20 12:10:44,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:45,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 12:10:45,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:45,129 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 12:10:45,130 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:10:45,143 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:10:45,144 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:10:45,150 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 12:10:45,206 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 12:10:45,209 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:45,290 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 12:10:45,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [524716807] [2019-11-20 12:10:45,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:10:45,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 12:10:45,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588223666] [2019-11-20 12:10:45,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 12:10:45,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 12:10:45,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 12:10:45,321 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 5 states. [2019-11-20 12:10:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:10:45,653 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2019-11-20 12:10:45,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 12:10:45,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 12:10:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:10:45,671 INFO L225 Difference]: With dead ends: 93 [2019-11-20 12:10:45,671 INFO L226 Difference]: Without dead ends: 90 [2019-11-20 12:10:45,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 1 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 12:10:45,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-20 12:10:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2019-11-20 12:10:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-20 12:10:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2019-11-20 12:10:45,726 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 22 [2019-11-20 12:10:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:10:45,727 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2019-11-20 12:10:45,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 12:10:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2019-11-20 12:10:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 12:10:45,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:45,730 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 12:10:45,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:10:45,935 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:10:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash 597436026, now seen corresponding path program 1 times [2019-11-20 12:10:45,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:45,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1653278667] [2019-11-20 12:10:45,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:46,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 12:10:46,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:46,271 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 12:10:46,271 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:10:46,278 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:10:46,279 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:10:46,279 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 12:10:46,468 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 12:10:46,469 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:47,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:10:47,706 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 12:10:47,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1653278667] [2019-11-20 12:10:47,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:10:47,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2019-11-20 12:10:47,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811545171] [2019-11-20 12:10:47,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 12:10:47,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:47,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 12:10:47,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-20 12:10:47,710 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 18 states. [2019-11-20 12:10:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:10:49,803 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2019-11-20 12:10:49,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 12:10:49,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-11-20 12:10:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:10:49,809 INFO L225 Difference]: With dead ends: 100 [2019-11-20 12:10:49,809 INFO L226 Difference]: Without dead ends: 100 [2019-11-20 12:10:49,811 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2019-11-20 12:10:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-20 12:10:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2019-11-20 12:10:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-20 12:10:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2019-11-20 12:10:49,825 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 22 [2019-11-20 12:10:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:10:49,825 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2019-11-20 12:10:49,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 12:10:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2019-11-20 12:10:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 12:10:49,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:49,826 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 12:10:50,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:10:50,033 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:10:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1484939706, now seen corresponding path program 1 times [2019-11-20 12:10:50,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:50,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [286629182] [2019-11-20 12:10:50,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:50,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 12:10:50,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:50,302 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 12:10:50,305 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:50,348 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 12:10:50,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [286629182] [2019-11-20 12:10:50,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:10:50,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 12:10:50,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105995766] [2019-11-20 12:10:50,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 12:10:50,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 12:10:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 12:10:50,350 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 5 states. [2019-11-20 12:10:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:10:50,393 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2019-11-20 12:10:50,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 12:10:50,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 12:10:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:10:50,395 INFO L225 Difference]: With dead ends: 90 [2019-11-20 12:10:50,395 INFO L226 Difference]: Without dead ends: 90 [2019-11-20 12:10:50,395 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 12:10:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-20 12:10:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2019-11-20 12:10:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 12:10:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2019-11-20 12:10:50,404 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 22 [2019-11-20 12:10:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:10:50,405 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2019-11-20 12:10:50,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 12:10:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2019-11-20 12:10:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 12:10:50,406 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:50,406 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 12:10:50,609 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:10:50,610 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:10:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1341474425, now seen corresponding path program 1 times [2019-11-20 12:10:50,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:50,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1259524277] [2019-11-20 12:10:50,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:50,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 12:10:50,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:50,857 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 12:10:50,857 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:50,941 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 12:10:50,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1259524277] [2019-11-20 12:10:50,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:10:50,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 12:10:50,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90588012] [2019-11-20 12:10:50,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 12:10:50,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 12:10:50,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 12:10:50,944 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 5 states. [2019-11-20 12:10:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:10:51,012 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2019-11-20 12:10:51,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 12:10:51,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-20 12:10:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:10:51,014 INFO L225 Difference]: With dead ends: 90 [2019-11-20 12:10:51,014 INFO L226 Difference]: Without dead ends: 90 [2019-11-20 12:10:51,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 12:10:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-20 12:10:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2019-11-20 12:10:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 12:10:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2019-11-20 12:10:51,022 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 23 [2019-11-20 12:10:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:10:51,023 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2019-11-20 12:10:51,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 12:10:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2019-11-20 12:10:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 12:10:51,024 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:51,024 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 12:10:51,226 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:10:51,231 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:10:51,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:51,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1210682536, now seen corresponding path program 1 times [2019-11-20 12:10:51,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:51,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1570385254] [2019-11-20 12:10:51,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:51,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 12:10:51,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:51,459 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 12:10:51,459 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:51,525 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 12:10:51,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1570385254] [2019-11-20 12:10:51,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:10:51,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 12:10:51,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565024528] [2019-11-20 12:10:51,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 12:10:51,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:51,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 12:10:51,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 12:10:51,528 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 3 states. [2019-11-20 12:10:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:10:51,707 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2019-11-20 12:10:51,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 12:10:51,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-20 12:10:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:10:51,710 INFO L225 Difference]: With dead ends: 126 [2019-11-20 12:10:51,710 INFO L226 Difference]: Without dead ends: 121 [2019-11-20 12:10:51,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 12:10:51,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-20 12:10:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86. [2019-11-20 12:10:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-20 12:10:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2019-11-20 12:10:51,718 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 23 [2019-11-20 12:10:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:10:51,718 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2019-11-20 12:10:51,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 12:10:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2019-11-20 12:10:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 12:10:51,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:51,719 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:10:51,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:10:51,921 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:10:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash -343863878, now seen corresponding path program 1 times [2019-11-20 12:10:51,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:51,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [428624778] [2019-11-20 12:10:51,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:10:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:52,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 12:10:52,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:52,256 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 12:10:52,257 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:10:52,263 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:10:52,263 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:10:52,264 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 12:10:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:10:52,660 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:54,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 12:10:57,104 WARN L192 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-11-20 12:10:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:10:57,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428624778] [2019-11-20 12:10:57,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 12:10:57,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2019-11-20 12:10:57,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125308340] [2019-11-20 12:10:57,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-20 12:10:57,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-20 12:10:57,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2019-11-20 12:10:57,682 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 25 states. [2019-11-20 12:10:58,786 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-11-20 12:10:59,478 WARN L192 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-20 12:11:00,104 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-11-20 12:11:00,688 WARN L192 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-11-20 12:11:01,161 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2019-11-20 12:11:01,595 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-20 12:11:01,904 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-11-20 12:11:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:11:03,381 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2019-11-20 12:11:03,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 12:11:03,383 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-11-20 12:11:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:11:03,386 INFO L225 Difference]: With dead ends: 103 [2019-11-20 12:11:03,386 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 12:11:03,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2019-11-20 12:11:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 12:11:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2019-11-20 12:11:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 12:11:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2019-11-20 12:11:03,395 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 28 [2019-11-20 12:11:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:11:03,395 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2019-11-20 12:11:03,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-20 12:11:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2019-11-20 12:11:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 12:11:03,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:11:03,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:11:03,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:11:03,613 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:11:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:11:03,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2025519899, now seen corresponding path program 1 times [2019-11-20 12:11:03,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:11:03,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1978664343] [2019-11-20 12:11:03,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:11:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:11:03,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 12:11:03,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:11:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:11:04,016 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:11:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:11:04,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1978664343] [2019-11-20 12:11:04,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 12:11:04,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2019-11-20 12:11:04,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401246217] [2019-11-20 12:11:04,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 12:11:04,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:11:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 12:11:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-20 12:11:04,239 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2019-11-20 12:11:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:11:04,619 INFO L93 Difference]: Finished difference Result 140 states and 160 transitions. [2019-11-20 12:11:04,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 12:11:04,620 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2019-11-20 12:11:04,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:11:04,623 INFO L225 Difference]: With dead ends: 140 [2019-11-20 12:11:04,623 INFO L226 Difference]: Without dead ends: 137 [2019-11-20 12:11:04,624 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-20 12:11:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-20 12:11:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2019-11-20 12:11:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-20 12:11:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2019-11-20 12:11:04,632 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 35 [2019-11-20 12:11:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:11:04,632 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2019-11-20 12:11:04,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 12:11:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2019-11-20 12:11:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 12:11:04,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:11:04,634 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:11:04,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:11:04,837 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:11:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:11:04,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1928439432, now seen corresponding path program 1 times [2019-11-20 12:11:04,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:11:04,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1046758357] [2019-11-20 12:11:04,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:11:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:11:05,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 12:11:05,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:11:05,143 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 12:11:05,143 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:05,146 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:05,146 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:11:05,147 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 12:11:05,296 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:05,297 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 12:11:05,298 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:05,324 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 12:11:05,324 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 12:11:05,326 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-20 12:11:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 12:11:05,373 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:11:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:11:07,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1046758357] [2019-11-20 12:11:07,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 12:11:07,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-11-20 12:11:07,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513401785] [2019-11-20 12:11:07,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 12:11:07,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:11:07,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 12:11:07,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2019-11-20 12:11:07,734 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 8 states. [2019-11-20 12:11:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:11:30,326 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2019-11-20 12:11:30,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 12:11:30,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-20 12:11:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:11:30,329 INFO L225 Difference]: With dead ends: 157 [2019-11-20 12:11:30,329 INFO L226 Difference]: Without dead ends: 157 [2019-11-20 12:11:30,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2019-11-20 12:11:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-20 12:11:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 105. [2019-11-20 12:11:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 12:11:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2019-11-20 12:11:30,338 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 35 [2019-11-20 12:11:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:11:30,338 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2019-11-20 12:11:30,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 12:11:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2019-11-20 12:11:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 12:11:30,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:11:30,340 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:11:30,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:11:30,551 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:11:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:11:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1928439431, now seen corresponding path program 1 times [2019-11-20 12:11:30,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:11:30,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [485597752] [2019-11-20 12:11:30,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:11:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:11:30,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 12:11:30,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:11:30,912 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 12:11:30,913 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:30,922 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:30,926 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 12:11:30,927 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:30,935 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:30,936 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:11:30,936 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 12:11:33,410 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:33,410 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 11 treesize of output 15 [2019-11-20 12:11:33,411 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:33,443 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:33,451 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 12:11:33,451 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:33,474 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:33,476 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 12:11:33,476 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:21 [2019-11-20 12:11:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:11:33,536 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:11:33,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 12:11:34,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 12:11:34,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:34,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:39,461 WARN L192 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-11-20 12:11:39,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 12:11:45,915 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-11-20 12:11:46,572 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_231|], 2=[|v_#length_186|]} [2019-11-20 12:11:46,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 12:11:46,578 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:46,579 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:46,580 INFO L464 ElimStorePlain]: Eliminatee |v_#length_186| vanished before elimination [2019-11-20 12:11:46,580 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 12:11:46,580 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:30, output treesize:1 [2019-11-20 12:11:46,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 12:11:47,297 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 12:11:47,306 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 10 treesize of output 8 [2019-11-20 12:11:47,307 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:47,325 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:47,328 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 12:11:47,328 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 12:11:47,346 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:11:47,347 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 12:11:47,347 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:17 [2019-11-20 12:11:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:11:47,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485597752] [2019-11-20 12:11:47,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 12:11:47,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2019-11-20 12:11:47,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518356808] [2019-11-20 12:11:47,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-20 12:11:47,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:11:47,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-20 12:11:47,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=775, Unknown=4, NotChecked=0, Total=870 [2019-11-20 12:11:47,541 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 30 states. [2019-11-20 12:11:52,277 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 12 [2019-11-20 12:12:32,857 WARN L192 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-11-20 12:12:39,910 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2019-11-20 12:13:14,460 WARN L192 SmtUtils]: Spent 20.71 s on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-20 12:13:17,284 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-11-20 12:13:20,390 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-11-20 12:13:21,154 WARN L192 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-11-20 12:13:23,850 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-20 12:13:35,754 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-20 12:13:43,733 WARN L192 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2019-11-20 12:13:52,996 WARN L192 SmtUtils]: Spent 6.78 s on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-11-20 12:14:06,841 WARN L192 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2019-11-20 12:14:28,243 WARN L192 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-11-20 12:14:42,013 WARN L192 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 46 DAG size of output: 16 [2019-11-20 12:14:56,434 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-11-20 12:15:14,044 WARN L192 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-11-20 12:15:31,014 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (bvmul c_alloc_17_~i~0 (_ bv8 32)))) (let ((.cse3 (bvadd .cse5 c_alloc_17_~array.offset)) (.cse4 (bvadd .cse5 c_alloc_17_~array.offset (_ bv8 32)))) (and (forall ((|v_ldv_malloc_#t~malloc12.base_35| (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_2 (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_alloc_17_~array.base_BEFORE_CALL_4 (_ BitVec 32)) (ldv_malloc_~size (_ BitVec 32))) (let ((.cse2 (bvmul v_alloc_17_~i~0_BEFORE_CALL_2 (_ bv8 32)))) (let ((.cse0 (bvadd .cse2 v_alloc_17_~array.offset_BEFORE_CALL_2)) (.cse1 (bvadd .cse2 v_alloc_17_~array.offset_BEFORE_CALL_2 (_ bv8 32)))) (or (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_35|) (_ bv0 1))) (not (bvsle .cse0 .cse1)) (exists ((|v_ldv_malloc_#t~malloc12.base_34| (_ BitVec 32)) (v_ldv_malloc_~size_42 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_malloc_#t~malloc12.base_34|)) (not (bvsle (bvadd (bvmul v_alloc_17_~i~0_BEFORE_CALL_2 (_ bv8 32)) v_alloc_17_~array.offset_BEFORE_CALL_2 (_ bv8 32)) (select (store |c_old(#length)| |v_ldv_malloc_#t~malloc12.base_34| v_ldv_malloc_~size_42) v_alloc_17_~array.base_BEFORE_CALL_4))))) (not (bvsle (_ bv0 32) .cse0)) (bvsle .cse1 (select (store |c_#length| |v_ldv_malloc_#t~malloc12.base_35| ldv_malloc_~size) v_alloc_17_~array.base_BEFORE_CALL_4)))))) (bvsle (_ bv0 32) .cse3) (or (bvsle (_ bv0 32) |c_alloc_17_#in~array.offset|) (forall ((|v_ldv_malloc_#t~malloc12.base_34| (_ BitVec 32))) (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_34|) (_ bv0 1))))) (forall ((v_prenex_13 (_ BitVec 32)) (v_ldv_malloc_~size_42 (_ BitVec 32))) (or (not (= (select |c_#valid| v_prenex_13) (_ bv0 1))) (bvsle (bvadd |c_alloc_17_#in~array.offset| (_ bv8 32)) (select (store |c_#length| v_prenex_13 v_ldv_malloc_~size_42) |c_alloc_17_#in~array.base|)))) (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|))) (bvsle .cse3 .cse4) (or (bvsle |c_alloc_17_#in~array.offset| (bvadd |c_alloc_17_#in~array.offset| (_ bv8 32))) (forall ((v_prenex_14 (_ BitVec 32))) (not (= (select |c_#valid| v_prenex_14) (_ bv0 1))))) (bvsle .cse4 (select |c_#length| c_alloc_17_~array.base))))) is different from false [2019-11-20 12:15:31,735 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-20 12:15:37,349 WARN L192 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-11-20 12:15:43,009 WARN L192 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-11-20 12:16:09,383 WARN L192 SmtUtils]: Spent 20.29 s on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2019-11-20 12:16:58,532 WARN L192 SmtUtils]: Spent 26.67 s on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-11-20 12:16:59,225 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-11-20 12:17:14,838 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-11-20 12:17:17,329 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2019-11-20 12:18:02,535 WARN L192 SmtUtils]: Spent 17.11 s on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-11-20 12:18:19,515 WARN L192 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2019-11-20 12:18:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:18:37,368 INFO L93 Difference]: Finished difference Result 395 states and 476 transitions. [2019-11-20 12:18:37,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-20 12:18:37,370 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 35 [2019-11-20 12:18:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:18:37,373 INFO L225 Difference]: With dead ends: 395 [2019-11-20 12:18:37,374 INFO L226 Difference]: Without dead ends: 395 [2019-11-20 12:18:37,376 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 215.2s TimeCoverageRelationStatistics Valid=498, Invalid=4166, Unknown=32, NotChecked=134, Total=4830 [2019-11-20 12:18:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-11-20 12:18:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 181. [2019-11-20 12:18:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-11-20 12:18:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 243 transitions. [2019-11-20 12:18:37,393 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 243 transitions. Word has length 35 [2019-11-20 12:18:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:18:37,394 INFO L462 AbstractCegarLoop]: Abstraction has 181 states and 243 transitions. [2019-11-20 12:18:37,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-20 12:18:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 243 transitions. [2019-11-20 12:18:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 12:18:37,395 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:18:37,396 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:18:37,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:18:37,602 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:18:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:18:37,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2099434107, now seen corresponding path program 1 times [2019-11-20 12:18:37,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:18:37,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1735271722] [2019-11-20 12:18:37,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:18:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:18:37,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 12:18:37,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:18:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 12:18:37,859 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:18:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 12:18:37,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1735271722] [2019-11-20 12:18:37,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:18:37,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 12:18:37,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217122921] [2019-11-20 12:18:37,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 12:18:37,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:18:37,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 12:18:37,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 12:18:37,899 INFO L87 Difference]: Start difference. First operand 181 states and 243 transitions. Second operand 5 states. [2019-11-20 12:18:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:18:37,961 INFO L93 Difference]: Finished difference Result 187 states and 243 transitions. [2019-11-20 12:18:37,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 12:18:37,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-20 12:18:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:18:37,966 INFO L225 Difference]: With dead ends: 187 [2019-11-20 12:18:37,966 INFO L226 Difference]: Without dead ends: 187 [2019-11-20 12:18:37,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 12:18:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-11-20 12:18:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 174. [2019-11-20 12:18:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-11-20 12:18:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 226 transitions. [2019-11-20 12:18:37,976 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 226 transitions. Word has length 37 [2019-11-20 12:18:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:18:37,976 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 226 transitions. [2019-11-20 12:18:37,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 12:18:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 226 transitions. [2019-11-20 12:18:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 12:18:37,978 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:18:37,978 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:18:38,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:18:38,182 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:18:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:18:38,183 INFO L82 PathProgramCache]: Analyzing trace with hash -356623772, now seen corresponding path program 1 times [2019-11-20 12:18:38,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:18:38,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [13824106] [2019-11-20 12:18:38,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 12:18:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:18:38,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 12:18:38,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:18:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 12:18:38,467 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:18:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 12:18:38,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [13824106] [2019-11-20 12:18:38,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:18:38,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 12:18:38,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435398817] [2019-11-20 12:18:38,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 12:18:38,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:18:38,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 12:18:38,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 12:18:38,496 INFO L87 Difference]: Start difference. First operand 174 states and 226 transitions. Second operand 6 states. [2019-11-20 12:18:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:18:38,622 INFO L93 Difference]: Finished difference Result 180 states and 222 transitions. [2019-11-20 12:18:38,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 12:18:38,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-20 12:18:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:18:38,624 INFO L225 Difference]: With dead ends: 180 [2019-11-20 12:18:38,624 INFO L226 Difference]: Without dead ends: 180 [2019-11-20 12:18:38,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 12:18:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-11-20 12:18:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 161. [2019-11-20 12:18:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-11-20 12:18:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 203 transitions. [2019-11-20 12:18:38,632 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 203 transitions. Word has length 37 [2019-11-20 12:18:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:18:38,632 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 203 transitions. [2019-11-20 12:18:38,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 12:18:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 203 transitions. [2019-11-20 12:18:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 12:18:38,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:18:38,634 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:18:38,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:18:38,845 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:18:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:18:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1765265242, now seen corresponding path program 1 times [2019-11-20 12:18:38,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:18:38,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1708177332] [2019-11-20 12:18:38,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:18:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:18:39,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 12:18:39,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:18:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 12:18:39,177 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:18:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 12:18:39,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1708177332] [2019-11-20 12:18:39,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:18:39,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 12:18:39,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733732220] [2019-11-20 12:18:39,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 12:18:39,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:18:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 12:18:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 12:18:39,219 INFO L87 Difference]: Start difference. First operand 161 states and 203 transitions. Second operand 5 states. [2019-11-20 12:18:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:18:39,246 INFO L93 Difference]: Finished difference Result 150 states and 177 transitions. [2019-11-20 12:18:39,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 12:18:39,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-11-20 12:18:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:18:39,249 INFO L225 Difference]: With dead ends: 150 [2019-11-20 12:18:39,249 INFO L226 Difference]: Without dead ends: 150 [2019-11-20 12:18:39,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 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 12:18:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-20 12:18:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2019-11-20 12:18:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-20 12:18:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2019-11-20 12:18:39,255 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 38 [2019-11-20 12:18:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:18:39,256 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2019-11-20 12:18:39,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 12:18:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2019-11-20 12:18:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 12:18:39,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:18:39,257 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:18:39,462 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:18:39,463 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:18:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:18:39,463 INFO L82 PathProgramCache]: Analyzing trace with hash 519015482, now seen corresponding path program 2 times [2019-11-20 12:18:39,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:18:39,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [943470038] [2019-11-20 12:18:39,465 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:18:39,814 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 12:18:39,814 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 12:18:39,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 12:18:39,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:18:39,849 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 12:18:39,849 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:18:39,855 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:18:39,855 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:18:39,855 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 12:18:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:18:40,684 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:18:42,319 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-20 12:18:42,961 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2019-11-20 12:18:43,470 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-20 12:18:44,027 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-20 12:18:44,599 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-20 12:18:45,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 12:18:46,581 WARN L192 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-11-20 12:18:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:18:47,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [943470038] [2019-11-20 12:18:47,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 12:18:47,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2019-11-20 12:18:47,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683191356] [2019-11-20 12:18:47,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 12:18:47,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:18:47,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 12:18:47,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 12:18:47,408 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand 34 states. [2019-11-20 12:18:48,754 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-20 12:18:49,422 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-20 12:18:50,156 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-11-20 12:18:51,150 WARN L192 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-20 12:18:51,621 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-20 12:18:52,899 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-20 12:18:53,509 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-20 12:18:56,427 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2019-11-20 12:18:58,329 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 99 DAG size of output: 29 [2019-11-20 12:19:00,647 WARN L192 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-20 12:19:02,498 WARN L192 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 29 [2019-11-20 12:19:04,879 WARN L192 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2019-11-20 12:19:06,741 WARN L192 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 29 [2019-11-20 12:19:08,886 WARN L192 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2019-11-20 12:19:10,279 WARN L192 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2019-11-20 12:19:11,895 WARN L192 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2019-11-20 12:19:12,989 WARN L192 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2019-11-20 12:19:13,843 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-20 12:19:15,336 WARN L192 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-11-20 12:19:15,919 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-11-20 12:19:17,589 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2019-11-20 12:19:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:19:20,594 INFO L93 Difference]: Finished difference Result 184 states and 250 transitions. [2019-11-20 12:19:20,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-20 12:19:20,597 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 40 [2019-11-20 12:19:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:19:20,599 INFO L225 Difference]: With dead ends: 184 [2019-11-20 12:19:20,599 INFO L226 Difference]: Without dead ends: 184 [2019-11-20 12:19:20,601 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=890, Invalid=3016, Unknown=0, NotChecked=0, Total=3906 [2019-11-20 12:19:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-20 12:19:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 172. [2019-11-20 12:19:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-20 12:19:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 207 transitions. [2019-11-20 12:19:20,611 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 207 transitions. Word has length 40 [2019-11-20 12:19:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:19:20,612 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 207 transitions. [2019-11-20 12:19:20,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 12:19:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 207 transitions. [2019-11-20 12:19:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 12:19:20,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:19:20,613 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 12:19:20,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:19:20,817 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 12:19:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:19:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash -725997882, now seen corresponding path program 1 times [2019-11-20 12:19:20,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:19:20,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [81667460] [2019-11-20 12:19:20,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:19:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:19:21,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 12:19:21,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:19:21,110 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 12:19:21,110 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 12:19:21,113 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 12:19:21,113 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 12:19:21,113 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 12:19:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 12:19:21,170 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:19:21,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 12:19:21,456 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 12:19:21,462 INFO L168 Benchmark]: Toolchain (without parser) took 519769.60 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 266.3 MB). Free memory was 951.0 MB in the beginning and 825.6 MB in the end (delta: 125.4 MB). Peak memory consumption was 391.7 MB. Max. memory is 11.5 GB. [2019-11-20 12:19:21,462 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 12:19:21,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 866.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-20 12:19:21,463 INFO L168 Benchmark]: Boogie Preprocessor took 110.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 12:19:21,463 INFO L168 Benchmark]: RCFGBuilder took 1826.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.4 MB in the end (delta: 117.2 MB). Peak memory consumption was 117.2 MB. Max. memory is 11.5 GB. [2019-11-20 12:19:21,463 INFO L168 Benchmark]: TraceAbstraction took 516959.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 112.7 MB). Free memory was 985.4 MB in the beginning and 825.6 MB in the end (delta: 159.9 MB). Peak memory consumption was 272.6 MB. Max. memory is 11.5 GB. [2019-11-20 12:19:21,465 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 866.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 110.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1826.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.4 MB in the end (delta: 117.2 MB). Peak memory consumption was 117.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 516959.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 112.7 MB). Free memory was 985.4 MB in the beginning and 825.6 MB in the end (delta: 159.9 MB). Peak memory consumption was 272.6 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...