./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ac6a57136fb33ea76036d7851611ff24d826c2e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 11:37:23,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:37:23,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:37:23,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:37:23,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:37:23,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:37:23,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:37:23,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:37:23,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:37:23,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:37:23,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:37:23,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:37:23,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:37:23,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:37:23,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:37:23,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:37:23,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:37:23,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:37:23,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:37:23,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:37:23,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:37:23,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:37:23,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:37:23,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:37:23,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:37:23,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:37:23,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:37:23,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:37:23,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:37:23,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:37:23,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:37:23,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:37:23,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:37:23,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:37:23,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:37:23,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:37:23,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:37:23,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:37:23,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:37:23,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:37:23,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:37:23,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 11:37:23,675 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:37:23,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:37:23,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:37:23,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:37:23,689 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:37:23,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:37:23,690 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:37:23,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 11:37:23,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:37:23,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:37:23,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:37:23,691 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 11:37:23,691 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 11:37:23,691 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 11:37:23,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:37:23,692 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:37:23,692 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:37:23,692 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:37:23,692 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:37:23,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:37:23,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:37:23,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:37:23,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:37:23,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:37:23,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:37:23,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:37:23,694 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:37:23,694 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:37:23,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:37:23,695 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ac6a57136fb33ea76036d7851611ff24d826c2e [2019-11-20 11:37:23,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:37:23,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:37:23,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:37:23,893 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:37:23,893 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:37:23,894 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2019-11-20 11:37:23,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/data/135f9177f/638ed50ed2cc48519b18d08a3bd30605/FLAGca11a34f9 [2019-11-20 11:37:24,447 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:37:24,448 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2019-11-20 11:37:24,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/data/135f9177f/638ed50ed2cc48519b18d08a3bd30605/FLAGca11a34f9 [2019-11-20 11:37:24,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/data/135f9177f/638ed50ed2cc48519b18d08a3bd30605 [2019-11-20 11:37:24,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:37:24,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 11:37:24,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:37:24,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:37:24,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:37:24,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:24" (1/1) ... [2019-11-20 11:37:24,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a9c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:24, skipping insertion in model container [2019-11-20 11:37:24,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:24" (1/1) ... [2019-11-20 11:37:24,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:37:24,859 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:37:25,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:37:25,481 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:37:25,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:37:25,641 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:37:25,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25 WrapperNode [2019-11-20 11:37:25,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:37:25,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:37:25,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:37:25,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:37:25,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... [2019-11-20 11:37:25,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:37:25,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:37:25,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:37:25,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:37:25,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:37:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 11:37:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:37:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 11:37:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 11:37:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 11:37:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 11:37:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 11:37:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 11:37:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 11:37:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 11:37:25,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 11:37:25,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 11:37:25,818 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 11:37:25,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 11:37:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 11:37:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 11:37:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 11:37:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 11:37:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 11:37:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 11:37:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 11:37:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 11:37:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 11:37:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 11:37:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 11:37:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 11:37:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 11:37:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 11:37:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 11:37:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 11:37:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 11:37:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 11:37:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 11:37:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 11:37:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 11:37:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 11:37:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 11:37:25,825 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 11:37:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 11:37:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 11:37:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 11:37:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 11:37:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 11:37:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 11:37:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 11:37:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 11:37:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 11:37:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 11:37:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 11:37:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 11:37:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 11:37:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 11:37:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 11:37:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 11:37:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 11:37:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 11:37:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 11:37:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 11:37:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 11:37:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 11:37:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 11:37:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 11:37:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 11:37:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 11:37:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 11:37:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 11:37:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 11:37:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 11:37:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 11:37:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 11:37:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 11:37:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 11:37:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 11:37:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 11:37:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 11:37:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 11:37:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 11:37:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 11:37:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 11:37:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 11:37:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 11:37:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 11:37:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 11:37:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 11:37:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 11:37:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 11:37:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 11:37:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 11:37:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 11:37:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 11:37:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 11:37:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 11:37:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 11:37:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 11:37:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 11:37:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 11:37:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 11:37:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 11:37:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 11:37:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 11:37:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 11:37:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 11:37:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 11:37:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 11:37:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 11:37:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 11:37:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 11:37:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 11:37:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 11:37:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 11:37:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 11:37:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 11:37:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 11:37:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 11:37:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 11:37:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 11:37:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 11:37:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 11:37:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 11:37:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 11:37:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 11:37:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 11:37:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 11:37:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 11:37:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 11:37:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 11:37:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 11:37:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 11:37:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 11:37:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 11:37:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 11:37:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 11:37:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 11:37:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 11:37:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 11:37:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 11:37:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 11:37:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 11:37:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 11:37:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 11:37:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 11:37:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 11:37:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 11:37:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 11:37:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 11:37:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 11:37:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 11:37:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 11:37:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 11:37:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 11:37:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 11:37:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 11:37:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 11:37:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 11:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 11:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 11:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 11:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 11:37:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 11:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 11:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 11:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 11:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 11:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 11:37:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 11:37:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 11:37:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 11:37:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 11:37:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:37:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 11:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 11:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 11:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 11:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 11:37:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 11:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 11:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 11:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 11:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 11:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 11:37:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 11:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 11:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 11:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 11:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 11:37:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 11:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 11:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 11:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 11:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 11:37:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 11:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 11:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 11:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 11:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 11:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 11:37:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 11:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 11:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 11:37:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 11:37:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 11:37:26,610 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 11:37:27,135 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 11:37:27,548 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:37:27,548 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-20 11:37:27,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:27 BoogieIcfgContainer [2019-11-20 11:37:27,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:37:27,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:37:27,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:37:27,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:37:27,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:37:24" (1/3) ... [2019-11-20 11:37:27,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0bf63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:27, skipping insertion in model container [2019-11-20 11:37:27,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:25" (2/3) ... [2019-11-20 11:37:27,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0bf63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:27, skipping insertion in model container [2019-11-20 11:37:27,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:27" (3/3) ... [2019-11-20 11:37:27,557 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-2.i [2019-11-20 11:37:27,572 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:37:27,583 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-20 11:37:27,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-20 11:37:27,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:37:27,621 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 11:37:27,621 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:37:27,621 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:37:27,621 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:37:27,621 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:37:27,621 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:37:27,622 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:37:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2019-11-20 11:37:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 11:37:27,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:27,662 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:27,662 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash -519206383, now seen corresponding path program 1 times [2019-11-20 11:37:27,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:27,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1061279094] [2019-11-20 11:37:27,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:28,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:37:28,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:28,111 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 11:37:28,112 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:28,123 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:28,123 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:28,123 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:37:28,159 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 11:37:28,159 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:28,250 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 11:37:28,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061279094] [2019-11-20 11:37:28,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:28,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 11:37:28,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569273394] [2019-11-20 11:37:28,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 11:37:28,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:37:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:37:28,280 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2019-11-20 11:37:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:28,699 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2019-11-20 11:37:28,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 11:37:28,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 11:37:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:28,716 INFO L225 Difference]: With dead ends: 157 [2019-11-20 11:37:28,716 INFO L226 Difference]: Without dead ends: 154 [2019-11-20 11:37:28,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:37:28,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-20 11:37:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 148. [2019-11-20 11:37:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-20 11:37:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 160 transitions. [2019-11-20 11:37:28,779 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 160 transitions. Word has length 17 [2019-11-20 11:37:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:28,780 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 160 transitions. [2019-11-20 11:37:28,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 11:37:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 160 transitions. [2019-11-20 11:37:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 11:37:28,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:28,782 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:28,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:28,986 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:28,987 INFO L82 PathProgramCache]: Analyzing trace with hash -519206382, now seen corresponding path program 1 times [2019-11-20 11:37:28,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:28,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [932421664] [2019-11-20 11:37:28,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:29,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 11:37:29,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:29,316 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 11:37:29,317 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:29,325 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:29,326 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:29,326 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:37:29,399 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 11:37:29,399 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:29,779 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 11:37:29,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [932421664] [2019-11-20 11:37:29,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:29,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 11:37:29,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291751421] [2019-11-20 11:37:29,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 11:37:29,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 11:37:29,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 11:37:29,783 INFO L87 Difference]: Start difference. First operand 148 states and 160 transitions. Second operand 10 states. [2019-11-20 11:37:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:30,670 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2019-11-20 11:37:30,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 11:37:30,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-20 11:37:30,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:30,674 INFO L225 Difference]: With dead ends: 153 [2019-11-20 11:37:30,675 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 11:37:30,676 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:37:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 11:37:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2019-11-20 11:37:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-20 11:37:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2019-11-20 11:37:30,694 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 17 [2019-11-20 11:37:30,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:30,694 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2019-11-20 11:37:30,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 11:37:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2019-11-20 11:37:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 11:37:30,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:30,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:30,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:30,901 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:30,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash -490577232, now seen corresponding path program 1 times [2019-11-20 11:37:30,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:30,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1026247556] [2019-11-20 11:37:30,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:31,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 11:37:31,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:31,248 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 11:37:31,248 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:31,301 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 11:37:31,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1026247556] [2019-11-20 11:37:31,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:31,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 11:37:31,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84569374] [2019-11-20 11:37:31,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 11:37:31,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:31,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:37:31,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:37:31,304 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand 5 states. [2019-11-20 11:37:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:31,329 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2019-11-20 11:37:31,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 11:37:31,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 11:37:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:31,333 INFO L225 Difference]: With dead ends: 147 [2019-11-20 11:37:31,333 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 11:37:31,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:37:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 11:37:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2019-11-20 11:37:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-20 11:37:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2019-11-20 11:37:31,348 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 17 [2019-11-20 11:37:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:31,349 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2019-11-20 11:37:31,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 11:37:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2019-11-20 11:37:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 11:37:31,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:31,351 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:31,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:31,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:31,559 INFO L82 PathProgramCache]: Analyzing trace with hash -711913447, now seen corresponding path program 1 times [2019-11-20 11:37:31,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:31,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [40092993] [2019-11-20 11:37:31,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:31,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:37:31,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:31,851 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 11:37:31,851 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:31,943 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 11:37:31,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40092993] [2019-11-20 11:37:31,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:31,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 11:37:31,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310686782] [2019-11-20 11:37:31,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 11:37:31,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:31,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:37:31,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:37:31,945 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 5 states. [2019-11-20 11:37:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:31,985 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2019-11-20 11:37:31,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 11:37:31,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-20 11:37:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:31,992 INFO L225 Difference]: With dead ends: 147 [2019-11-20 11:37:31,995 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 11:37:31,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:37:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 11:37:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2019-11-20 11:37:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-20 11:37:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2019-11-20 11:37:32,019 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 27 [2019-11-20 11:37:32,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:32,019 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2019-11-20 11:37:32,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 11:37:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2019-11-20 11:37:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 11:37:32,021 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:32,022 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:32,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:32,225 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1222447624, now seen corresponding path program 1 times [2019-11-20 11:37:32,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:32,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1022194179] [2019-11-20 11:37:32,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:32,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 11:37:32,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:32,594 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 11:37:32,594 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:32,666 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 11:37:32,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1022194179] [2019-11-20 11:37:32,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:32,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-20 11:37:32,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68669194] [2019-11-20 11:37:32,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:37:32,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:32,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:37:32,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:37:32,669 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand 7 states. [2019-11-20 11:37:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:32,758 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2019-11-20 11:37:32,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 11:37:32,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 11:37:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:32,765 INFO L225 Difference]: With dead ends: 162 [2019-11-20 11:37:32,765 INFO L226 Difference]: Without dead ends: 162 [2019-11-20 11:37:32,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 11:37:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-20 11:37:32,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2019-11-20 11:37:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-20 11:37:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2019-11-20 11:37:32,794 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 27 [2019-11-20 11:37:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:32,795 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2019-11-20 11:37:32,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:37:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2019-11-20 11:37:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 11:37:32,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:32,797 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:33,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:33,002 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1298813523, now seen corresponding path program 1 times [2019-11-20 11:37:33,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:33,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2016616124] [2019-11-20 11:37:33,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:33,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 11:37:33,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:33,295 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 11:37:33,295 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:33,367 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 11:37:33,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2016616124] [2019-11-20 11:37:33,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:33,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 11:37:33,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602731816] [2019-11-20 11:37:33,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 11:37:33,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:33,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 11:37:33,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 11:37:33,369 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand 6 states. [2019-11-20 11:37:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:33,437 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2019-11-20 11:37:33,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 11:37:33,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-20 11:37:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:33,441 INFO L225 Difference]: With dead ends: 160 [2019-11-20 11:37:33,441 INFO L226 Difference]: Without dead ends: 156 [2019-11-20 11:37:33,441 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:37:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-20 11:37:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-11-20 11:37:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-20 11:37:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 164 transitions. [2019-11-20 11:37:33,465 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 164 transitions. Word has length 32 [2019-11-20 11:37:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:33,466 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 164 transitions. [2019-11-20 11:37:33,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 11:37:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 164 transitions. [2019-11-20 11:37:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 11:37:33,471 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:33,471 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:33,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:33,675 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:33,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:33,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1558950541, now seen corresponding path program 1 times [2019-11-20 11:37:33,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:33,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1316619630] [2019-11-20 11:37:33,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:33,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:37:33,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:34,017 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:34,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1316619630] [2019-11-20 11:37:34,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:37:34,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-20 11:37:34,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442717375] [2019-11-20 11:37:34,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 11:37:34,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:34,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 11:37:34,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-20 11:37:34,168 INFO L87 Difference]: Start difference. First operand 156 states and 164 transitions. Second operand 10 states. [2019-11-20 11:37:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:34,509 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2019-11-20 11:37:34,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 11:37:34,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-11-20 11:37:34,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:34,516 INFO L225 Difference]: With dead ends: 164 [2019-11-20 11:37:34,517 INFO L226 Difference]: Without dead ends: 160 [2019-11-20 11:37:34,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-20 11:37:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-20 11:37:34,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-11-20 11:37:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-11-20 11:37:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 168 transitions. [2019-11-20 11:37:34,541 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 168 transitions. Word has length 34 [2019-11-20 11:37:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:34,542 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 168 transitions. [2019-11-20 11:37:34,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 11:37:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 168 transitions. [2019-11-20 11:37:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 11:37:34,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:34,545 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:34,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:34,749 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1572375475, now seen corresponding path program 1 times [2019-11-20 11:37:34,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:34,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [826752553] [2019-11-20 11:37:34,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:35,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 11:37:35,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:35,117 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 11:37:35,117 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:35,168 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 11:37:35,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [826752553] [2019-11-20 11:37:35,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:35,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-20 11:37:35,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481930918] [2019-11-20 11:37:35,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:37:35,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:35,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:37:35,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:37:35,170 INFO L87 Difference]: Start difference. First operand 160 states and 168 transitions. Second operand 7 states. [2019-11-20 11:37:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:35,270 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2019-11-20 11:37:35,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 11:37:35,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-20 11:37:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:35,273 INFO L225 Difference]: With dead ends: 171 [2019-11-20 11:37:35,273 INFO L226 Difference]: Without dead ends: 171 [2019-11-20 11:37:35,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 11:37:35,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-20 11:37:35,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2019-11-20 11:37:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-20 11:37:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2019-11-20 11:37:35,296 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 36 [2019-11-20 11:37:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:35,296 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2019-11-20 11:37:35,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:37:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2019-11-20 11:37:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 11:37:35,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:35,305 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:35,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:35,509 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1646488499, now seen corresponding path program 2 times [2019-11-20 11:37:35,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:35,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1703625615] [2019-11-20 11:37:35,510 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:35,822 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 11:37:35,822 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 11:37:35,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 11:37:35,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:35,834 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 11:37:35,835 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:35,838 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:35,839 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:35,839 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:37:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 11:37:36,007 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 11:37:36,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703625615] [2019-11-20 11:37:36,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:36,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-20 11:37:36,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351002132] [2019-11-20 11:37:36,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 11:37:36,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:36,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 11:37:36,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 11:37:36,092 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand 13 states. [2019-11-20 11:37:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:37,552 INFO L93 Difference]: Finished difference Result 190 states and 207 transitions. [2019-11-20 11:37:37,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 11:37:37,555 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-20 11:37:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:37,557 INFO L225 Difference]: With dead ends: 190 [2019-11-20 11:37:37,558 INFO L226 Difference]: Without dead ends: 190 [2019-11-20 11:37:37,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-20 11:37:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-11-20 11:37:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 166. [2019-11-20 11:37:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-11-20 11:37:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2019-11-20 11:37:37,572 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 38 [2019-11-20 11:37:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:37,573 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2019-11-20 11:37:37,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 11:37:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2019-11-20 11:37:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 11:37:37,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:37,576 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:37,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:37,788 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1646488498, now seen corresponding path program 1 times [2019-11-20 11:37:37,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:37,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [690815079] [2019-11-20 11:37:37,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:38,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 11:37:38,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:38,165 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:38,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690815079] [2019-11-20 11:37:38,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:37:38,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-20 11:37:38,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579256556] [2019-11-20 11:37:38,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 11:37:38,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 11:37:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-11-20 11:37:38,602 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand 18 states. [2019-11-20 11:37:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:39,758 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2019-11-20 11:37:39,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 11:37:39,760 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-20 11:37:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:39,762 INFO L225 Difference]: With dead ends: 178 [2019-11-20 11:37:39,762 INFO L226 Difference]: Without dead ends: 174 [2019-11-20 11:37:39,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-11-20 11:37:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-11-20 11:37:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2019-11-20 11:37:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-11-20 11:37:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2019-11-20 11:37:39,771 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 38 [2019-11-20 11:37:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:39,771 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2019-11-20 11:37:39,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 11:37:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2019-11-20 11:37:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 11:37:39,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:39,773 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, 1, 1] [2019-11-20 11:37:39,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:39,977 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:39,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1599618583, now seen corresponding path program 1 times [2019-11-20 11:37:39,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:39,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1058773853] [2019-11-20 11:37:39,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:40,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 11:37:40,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 11:37:40,196 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 11:37:40,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1058773853] [2019-11-20 11:37:40,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:40,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 11:37:40,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788767368] [2019-11-20 11:37:40,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 11:37:40,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 11:37:40,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:37:40,386 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand 3 states. [2019-11-20 11:37:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:40,651 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2019-11-20 11:37:40,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:37:40,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-20 11:37:40,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:40,653 INFO L225 Difference]: With dead ends: 185 [2019-11-20 11:37:40,653 INFO L226 Difference]: Without dead ends: 162 [2019-11-20 11:37:40,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 11:37:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-20 11:37:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2019-11-20 11:37:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-20 11:37:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 161 transitions. [2019-11-20 11:37:40,662 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 161 transitions. Word has length 39 [2019-11-20 11:37:40,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:40,662 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 161 transitions. [2019-11-20 11:37:40,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 11:37:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 161 transitions. [2019-11-20 11:37:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-20 11:37:40,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:40,666 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:40,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:40,866 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:40,867 INFO L82 PathProgramCache]: Analyzing trace with hash -36063282, now seen corresponding path program 2 times [2019-11-20 11:37:40,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:40,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1980851500] [2019-11-20 11:37:40,867 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:41,145 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 11:37:41,145 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 11:37:41,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 11:37:41,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:41,163 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 11:37:41,163 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:41,170 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:41,170 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:41,171 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:37:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-20 11:37:41,465 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-20 11:37:42,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1980851500] [2019-11-20 11:37:42,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:42,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-20 11:37:42,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292177370] [2019-11-20 11:37:42,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 11:37:42,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:42,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 11:37:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-20 11:37:42,536 INFO L87 Difference]: Start difference. First operand 154 states and 161 transitions. Second operand 23 states. [2019-11-20 11:37:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:45,594 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2019-11-20 11:37:45,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 11:37:45,595 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2019-11-20 11:37:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:45,596 INFO L225 Difference]: With dead ends: 153 [2019-11-20 11:37:45,596 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 11:37:45,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-20 11:37:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 11:37:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-11-20 11:37:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-20 11:37:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2019-11-20 11:37:45,603 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 46 [2019-11-20 11:37:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:45,603 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2019-11-20 11:37:45,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 11:37:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2019-11-20 11:37:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-20 11:37:45,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:45,605 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:45,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:45,809 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:45,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1736200604, now seen corresponding path program 1 times [2019-11-20 11:37:45,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:45,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1640093213] [2019-11-20 11:37:45,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:46,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 11:37:46,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:46,353 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:46,465 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-20 11:37:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:37:47,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1640093213] [2019-11-20 11:37:47,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:37:47,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-11-20 11:37:47,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479985833] [2019-11-20 11:37:47,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 11:37:47,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:47,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 11:37:47,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 11:37:47,528 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand 34 states. [2019-11-20 11:37:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:48,916 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2019-11-20 11:37:48,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 11:37:48,921 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 51 [2019-11-20 11:37:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:48,926 INFO L225 Difference]: With dead ends: 159 [2019-11-20 11:37:48,926 INFO L226 Difference]: Without dead ends: 155 [2019-11-20 11:37:48,927 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 11:37:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-20 11:37:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-11-20 11:37:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-11-20 11:37:48,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2019-11-20 11:37:48,936 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 51 [2019-11-20 11:37:48,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:48,936 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2019-11-20 11:37:48,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 11:37:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2019-11-20 11:37:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 11:37:48,937 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:48,938 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:49,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:49,144 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:49,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1235525444, now seen corresponding path program 2 times [2019-11-20 11:37:49,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:49,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2050060852] [2019-11-20 11:37:49,146 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:49,445 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 11:37:49,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 11:37:49,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 11:37:49,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:49,464 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 11:37:49,464 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:49,467 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:49,468 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:49,468 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:37:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:49,670 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:49,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2050060852] [2019-11-20 11:37:49,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:49,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-20 11:37:49,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207155640] [2019-11-20 11:37:49,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 11:37:49,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:49,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 11:37:49,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 11:37:49,817 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand 13 states. [2019-11-20 11:37:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:51,064 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2019-11-20 11:37:51,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 11:37:51,064 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-20 11:37:51,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:51,067 INFO L225 Difference]: With dead ends: 177 [2019-11-20 11:37:51,067 INFO L226 Difference]: Without dead ends: 177 [2019-11-20 11:37:51,067 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-20 11:37:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-20 11:37:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 153. [2019-11-20 11:37:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-20 11:37:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2019-11-20 11:37:51,073 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 53 [2019-11-20 11:37:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:51,074 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2019-11-20 11:37:51,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 11:37:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2019-11-20 11:37:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 11:37:51,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:51,075 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:51,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:51,285 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1235525443, now seen corresponding path program 1 times [2019-11-20 11:37:51,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:51,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1531430884] [2019-11-20 11:37:51,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:51,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 11:37:51,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:51,726 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 11:37:51,726 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:51,737 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:51,737 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:51,737 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:37:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:51,987 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:52,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1531430884] [2019-11-20 11:37:52,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:52,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-20 11:37:52,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767204771] [2019-11-20 11:37:52,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 11:37:52,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 11:37:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-20 11:37:52,982 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand 23 states. [2019-11-20 11:37:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:55,964 INFO L93 Difference]: Finished difference Result 151 states and 158 transitions. [2019-11-20 11:37:55,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 11:37:55,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2019-11-20 11:37:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:55,966 INFO L225 Difference]: With dead ends: 151 [2019-11-20 11:37:55,966 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 11:37:55,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-20 11:37:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 11:37:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-11-20 11:37:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-20 11:37:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2019-11-20 11:37:55,973 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 53 [2019-11-20 11:37:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:55,973 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2019-11-20 11:37:55,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 11:37:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2019-11-20 11:37:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-20 11:37:55,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:55,975 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:56,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:56,180 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:56,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1552325680, now seen corresponding path program 1 times [2019-11-20 11:37:56,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:56,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [334982091] [2019-11-20 11:37:56,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:56,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 11:37:56,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:56,501 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:56,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [334982091] [2019-11-20 11:37:56,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:56,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-20 11:37:56,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643033787] [2019-11-20 11:37:56,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 11:37:56,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:56,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 11:37:56,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 11:37:56,649 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 8 states. [2019-11-20 11:37:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:56,707 INFO L93 Difference]: Finished difference Result 153 states and 159 transitions. [2019-11-20 11:37:56,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:37:56,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2019-11-20 11:37:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:56,710 INFO L225 Difference]: With dead ends: 153 [2019-11-20 11:37:56,710 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 11:37:56,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-20 11:37:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 11:37:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-11-20 11:37:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-20 11:37:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 157 transitions. [2019-11-20 11:37:56,716 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 157 transitions. Word has length 56 [2019-11-20 11:37:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:56,717 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 157 transitions. [2019-11-20 11:37:56,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 11:37:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 157 transitions. [2019-11-20 11:37:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-20 11:37:56,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:56,718 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:56,918 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:56,919 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:56,919 INFO L82 PathProgramCache]: Analyzing trace with hash -633058073, now seen corresponding path program 1 times [2019-11-20 11:37:56,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:56,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1122687958] [2019-11-20 11:37:56,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:57,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 11:37:57,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:57,286 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:57,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:37:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:57,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122687958] [2019-11-20 11:37:57,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:57,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2019-11-20 11:37:57,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404480539] [2019-11-20 11:37:57,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 11:37:57,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:57,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 11:37:57,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:37:57,526 INFO L87 Difference]: Start difference. First operand 151 states and 157 transitions. Second operand 11 states. [2019-11-20 11:37:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:37:57,647 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2019-11-20 11:37:57,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 11:37:57,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2019-11-20 11:37:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:37:57,650 INFO L225 Difference]: With dead ends: 155 [2019-11-20 11:37:57,650 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 11:37:57,650 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 11:37:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 11:37:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-11-20 11:37:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-20 11:37:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2019-11-20 11:37:57,656 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 61 [2019-11-20 11:37:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:37:57,656 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2019-11-20 11:37:57,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 11:37:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2019-11-20 11:37:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-20 11:37:57,658 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:37:57,658 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:37:57,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:57,861 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:37:57,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:37:57,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1417909128, now seen corresponding path program 1 times [2019-11-20 11:37:57,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:37:57,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1415706363] [2019-11-20 11:37:57,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:37:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:37:58,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 11:37:58,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:37:58,320 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 11:37:58,320 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:37:58,323 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:37:58,323 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:37:58,323 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:37:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:58,826 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:37:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:37:59,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1415706363] [2019-11-20 11:37:59,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:37:59,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 12] imperfect sequences [] total 17 [2019-11-20 11:37:59,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572364414] [2019-11-20 11:37:59,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 11:37:59,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:37:59,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 11:37:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2019-11-20 11:37:59,223 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand 18 states. [2019-11-20 11:38:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:01,295 INFO L93 Difference]: Finished difference Result 173 states and 186 transitions. [2019-11-20 11:38:01,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 11:38:01,295 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 72 [2019-11-20 11:38:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:01,297 INFO L225 Difference]: With dead ends: 173 [2019-11-20 11:38:01,297 INFO L226 Difference]: Without dead ends: 173 [2019-11-20 11:38:01,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-11-20 11:38:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-20 11:38:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 149. [2019-11-20 11:38:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-11-20 11:38:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 154 transitions. [2019-11-20 11:38:01,305 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 154 transitions. Word has length 72 [2019-11-20 11:38:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:01,305 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 154 transitions. [2019-11-20 11:38:01,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 11:38:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 154 transitions. [2019-11-20 11:38:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-20 11:38:01,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:01,307 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:01,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:01,512 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1417909127, now seen corresponding path program 1 times [2019-11-20 11:38:01,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:01,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [39316361] [2019-11-20 11:38:01,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:02,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-20 11:38:02,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:02,064 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 11:38:02,064 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:02,072 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:02,072 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:02,072 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:38:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:02,544 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:04,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [39316361] [2019-11-20 11:38:04,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:04,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 14] imperfect sequences [] total 30 [2019-11-20 11:38:04,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406660795] [2019-11-20 11:38:04,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-20 11:38:04,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:04,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-20 11:38:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2019-11-20 11:38:04,495 INFO L87 Difference]: Start difference. First operand 149 states and 154 transitions. Second operand 31 states. [2019-11-20 11:38:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:08,641 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2019-11-20 11:38:08,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 11:38:08,642 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2019-11-20 11:38:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:08,643 INFO L225 Difference]: With dead ends: 147 [2019-11-20 11:38:08,643 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 11:38:08,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 11:38:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 11:38:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-11-20 11:38:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-20 11:38:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 152 transitions. [2019-11-20 11:38:08,649 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 152 transitions. Word has length 72 [2019-11-20 11:38:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:08,649 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 152 transitions. [2019-11-20 11:38:08,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-20 11:38:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 152 transitions. [2019-11-20 11:38:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-20 11:38:08,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:08,651 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:08,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:08,860 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash -864795187, now seen corresponding path program 1 times [2019-11-20 11:38:08,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:08,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1971228161] [2019-11-20 11:38:08,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:09,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 11:38:09,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:09,253 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:09,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971228161] [2019-11-20 11:38:09,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:09,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2019-11-20 11:38:09,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384292017] [2019-11-20 11:38:09,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 11:38:09,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:09,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 11:38:09,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:38:09,421 INFO L87 Difference]: Start difference. First operand 147 states and 152 transitions. Second operand 11 states. [2019-11-20 11:38:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:09,501 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2019-11-20 11:38:09,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 11:38:09,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2019-11-20 11:38:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:09,506 INFO L225 Difference]: With dead ends: 150 [2019-11-20 11:38:09,506 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 11:38:09,506 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-20 11:38:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 11:38:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-11-20 11:38:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-20 11:38:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2019-11-20 11:38:09,511 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 81 [2019-11-20 11:38:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:09,514 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2019-11-20 11:38:09,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 11:38:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2019-11-20 11:38:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-20 11:38:09,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:09,517 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:09,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:09,720 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash 203759940, now seen corresponding path program 1 times [2019-11-20 11:38:09,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:09,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [241461841] [2019-11-20 11:38:09,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:10,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-20 11:38:10,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:10,222 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 11:38:10,222 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:10,224 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:10,224 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:10,224 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:38:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:10,831 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:11,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [241461841] [2019-11-20 11:38:11,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:11,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 14] imperfect sequences [] total 19 [2019-11-20 11:38:11,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316265129] [2019-11-20 11:38:11,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 11:38:11,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:11,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 11:38:11,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-11-20 11:38:11,355 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand 20 states. [2019-11-20 11:38:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:13,545 INFO L93 Difference]: Finished difference Result 198 states and 218 transitions. [2019-11-20 11:38:13,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 11:38:13,545 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2019-11-20 11:38:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:13,547 INFO L225 Difference]: With dead ends: 198 [2019-11-20 11:38:13,547 INFO L226 Difference]: Without dead ends: 198 [2019-11-20 11:38:13,548 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 163 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2019-11-20 11:38:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2019-11-20 11:38:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2019-11-20 11:38:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-11-20 11:38:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2019-11-20 11:38:13,556 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 94 [2019-11-20 11:38:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:13,557 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2019-11-20 11:38:13,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 11:38:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2019-11-20 11:38:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-20 11:38:13,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:13,559 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:13,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:13,760 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash 203759941, now seen corresponding path program 1 times [2019-11-20 11:38:13,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:13,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [396949132] [2019-11-20 11:38:13,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:14,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-20 11:38:14,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:14,453 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 11:38:14,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:14,459 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:14,459 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:14,460 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:38:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:15,091 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:17,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [396949132] [2019-11-20 11:38:17,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:17,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 16] imperfect sequences [] total 34 [2019-11-20 11:38:17,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521348819] [2019-11-20 11:38:17,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-20 11:38:17,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-20 11:38:17,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 11:38:17,609 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 35 states. [2019-11-20 11:38:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:22,159 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2019-11-20 11:38:22,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 11:38:22,162 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 94 [2019-11-20 11:38:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:22,163 INFO L225 Difference]: With dead ends: 172 [2019-11-20 11:38:22,163 INFO L226 Difference]: Without dead ends: 172 [2019-11-20 11:38:22,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 11:38:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-20 11:38:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2019-11-20 11:38:22,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-20 11:38:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2019-11-20 11:38:22,172 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 94 [2019-11-20 11:38:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:22,172 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2019-11-20 11:38:22,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-20 11:38:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2019-11-20 11:38:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-20 11:38:22,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:22,173 INFO L410 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:22,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:22,380 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1548410258, now seen corresponding path program 1 times [2019-11-20 11:38:22,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:22,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [52553084] [2019-11-20 11:38:22,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:22,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 11:38:22,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:22,753 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2019-11-20 11:38:23,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [52553084] [2019-11-20 11:38:23,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 11:38:23,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2019-11-20 11:38:23,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696912790] [2019-11-20 11:38:23,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 11:38:23,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:23,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 11:38:23,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:38:23,052 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand 10 states. [2019-11-20 11:38:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:23,186 INFO L93 Difference]: Finished difference Result 173 states and 179 transitions. [2019-11-20 11:38:23,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 11:38:23,187 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2019-11-20 11:38:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:23,188 INFO L225 Difference]: With dead ends: 173 [2019-11-20 11:38:23,188 INFO L226 Difference]: Without dead ends: 169 [2019-11-20 11:38:23,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-20 11:38:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-20 11:38:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2019-11-20 11:38:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-11-20 11:38:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 175 transitions. [2019-11-20 11:38:23,196 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 175 transitions. Word has length 97 [2019-11-20 11:38:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:23,197 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 175 transitions. [2019-11-20 11:38:23,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 11:38:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 175 transitions. [2019-11-20 11:38:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-20 11:38:23,199 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:23,199 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:23,415 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:23,415 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 213991631, now seen corresponding path program 1 times [2019-11-20 11:38:23,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:23,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1258478679] [2019-11-20 11:38:23,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:23,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-20 11:38:24,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:24,005 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 11:38:24,005 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:24,007 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:24,008 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:24,008 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 11:38:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:24,615 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:25,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1258478679] [2019-11-20 11:38:25,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:25,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 18] imperfect sequences [] total 23 [2019-11-20 11:38:25,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410793462] [2019-11-20 11:38:25,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 11:38:25,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 11:38:25,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2019-11-20 11:38:25,158 INFO L87 Difference]: Start difference. First operand 169 states and 175 transitions. Second operand 24 states. [2019-11-20 11:38:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:27,752 INFO L93 Difference]: Finished difference Result 200 states and 216 transitions. [2019-11-20 11:38:27,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-20 11:38:27,752 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 107 [2019-11-20 11:38:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:27,754 INFO L225 Difference]: With dead ends: 200 [2019-11-20 11:38:27,754 INFO L226 Difference]: Without dead ends: 200 [2019-11-20 11:38:27,754 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-20 11:38:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2019-11-20 11:38:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 175. [2019-11-20 11:38:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-20 11:38:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 185 transitions. [2019-11-20 11:38:27,760 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 185 transitions. Word has length 107 [2019-11-20 11:38:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:27,760 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 185 transitions. [2019-11-20 11:38:27,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 11:38:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 185 transitions. [2019-11-20 11:38:27,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-20 11:38:27,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:27,762 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:27,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:27,970 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:27,970 INFO L82 PathProgramCache]: Analyzing trace with hash 213991632, now seen corresponding path program 1 times [2019-11-20 11:38:27,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:27,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [676747073] [2019-11-20 11:38:27,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:28,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-20 11:38:28,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:28,774 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 11:38:28,775 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:28,796 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:28,796 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:28,797 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 11:38:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:30,083 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:33,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [676747073] [2019-11-20 11:38:33,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:33,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 20] imperfect sequences [] total 42 [2019-11-20 11:38:33,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213447340] [2019-11-20 11:38:33,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-20 11:38:33,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:33,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-20 11:38:33,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2019-11-20 11:38:33,653 INFO L87 Difference]: Start difference. First operand 175 states and 185 transitions. Second operand 43 states. [2019-11-20 11:38:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:40,524 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2019-11-20 11:38:40,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 11:38:40,525 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 107 [2019-11-20 11:38:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:40,526 INFO L225 Difference]: With dead ends: 173 [2019-11-20 11:38:40,526 INFO L226 Difference]: Without dead ends: 173 [2019-11-20 11:38:40,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=176, Invalid=2374, Unknown=0, NotChecked=0, Total=2550 [2019-11-20 11:38:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-20 11:38:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2019-11-20 11:38:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-11-20 11:38:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2019-11-20 11:38:40,533 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 107 [2019-11-20 11:38:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:40,534 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2019-11-20 11:38:40,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-20 11:38:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2019-11-20 11:38:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-20 11:38:40,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:40,536 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:40,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:40,745 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:40,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1293457192, now seen corresponding path program 1 times [2019-11-20 11:38:40,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:40,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1411792254] [2019-11-20 11:38:40,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:41,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 11:38:41,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:42,407 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:38:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 11:38:43,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1411792254] [2019-11-20 11:38:43,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:38:43,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 38 [2019-11-20 11:38:43,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100030093] [2019-11-20 11:38:43,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-20 11:38:43,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:38:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-20 11:38:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 11:38:43,298 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand 39 states. [2019-11-20 11:38:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:38:45,747 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2019-11-20 11:38:45,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 11:38:45,748 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2019-11-20 11:38:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:38:45,749 INFO L225 Difference]: With dead ends: 172 [2019-11-20 11:38:45,749 INFO L226 Difference]: Without dead ends: 172 [2019-11-20 11:38:45,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 11:38:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-20 11:38:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2019-11-20 11:38:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-20 11:38:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2019-11-20 11:38:45,755 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 110 [2019-11-20 11:38:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:38:45,756 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2019-11-20 11:38:45,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-20 11:38:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2019-11-20 11:38:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-20 11:38:45,757 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:38:45,757 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:38:45,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:45,960 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 11:38:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:38:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1063061933, now seen corresponding path program 1 times [2019-11-20 11:38:45,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:38:45,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1901598223] [2019-11-20 11:38:45,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46014f9-a962-4253-bda0-daef8d913e81/bin/uautomizer/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:38:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:38:46,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 132 conjunts are in the unsatisfiable core [2019-11-20 11:38:46,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:38:46,946 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-11-20 11:38:46,946 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:46,962 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:46,962 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:46,962 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-11-20 11:38:47,028 INFO L343 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2019-11-20 11:38:47,028 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2019-11-20 11:38:47,028 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:47,063 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:47,064 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:47,064 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-20 11:38:47,173 INFO L343 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2019-11-20 11:38:47,173 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2019-11-20 11:38:47,174 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:47,190 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:38:47,190 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:47,191 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-11-20 11:38:47,537 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-11-20 11:38:47,538 INFO L343 Elim1Store]: treesize reduction 32, result has 77.5 percent of original size [2019-11-20 11:38:47,538 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 137 [2019-11-20 11:38:47,539 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:38:47,684 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2019-11-20 11:38:47,685 INFO L567 ElimStorePlain]: treesize reduction 84, result has 35.9 percent of original size [2019-11-20 11:38:47,685 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:38:47,685 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2019-11-20 11:39:24,590 WARN L191 SmtUtils]: Spent 36.78 s on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-11-20 11:39:24,591 INFO L343 Elim1Store]: treesize reduction 65, result has 70.7 percent of original size [2019-11-20 11:39:24,591 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 189 [2019-11-20 11:39:24,592 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:39:26,752 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2019-11-20 11:39:26,753 INFO L567 ElimStorePlain]: treesize reduction 148, result has 28.5 percent of original size [2019-11-20 11:39:26,753 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:39:26,753 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2019-11-20 11:39:26,996 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 28 [2019-11-20 11:39:26,996 INFO L343 Elim1Store]: treesize reduction 246, result has 15.2 percent of original size [2019-11-20 11:39:26,996 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 80 [2019-11-20 11:39:26,997 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:39:27,033 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:39:27,033 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:39:27,033 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2019-11-20 11:39:27,589 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2019-11-20 11:39:27,589 INFO L343 Elim1Store]: treesize reduction 170, result has 57.2 percent of original size [2019-11-20 11:39:27,590 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 269 [2019-11-20 11:39:27,591 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:39:29,863 WARN L191 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-11-20 11:39:29,864 INFO L567 ElimStorePlain]: treesize reduction 174, result has 32.0 percent of original size [2019-11-20 11:39:29,864 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:39:29,864 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2019-11-20 11:40:43,548 WARN L191 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 163 DAG size of output: 98 [2019-11-20 11:40:43,549 INFO L343 Elim1Store]: treesize reduction 203, result has 60.7 percent of original size [2019-11-20 11:40:43,549 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 360 [2019-11-20 11:40:43,550 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:40:45,873 WARN L191 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2019-11-20 11:40:45,874 INFO L567 ElimStorePlain]: treesize reduction 304, result has 23.2 percent of original size [2019-11-20 11:40:45,874 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:40:45,874 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:92 [2019-11-20 11:43:13,442 WARN L191 SmtUtils]: Spent 2.46 m on a formula simplification. DAG size of input: 201 DAG size of output: 127 [2019-11-20 11:43:13,443 INFO L343 Elim1Store]: treesize reduction 250, result has 61.5 percent of original size [2019-11-20 11:43:13,443 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 451 [2019-11-20 11:43:13,445 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:43:13,708 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-11-20 11:43:13,709 INFO L567 ElimStorePlain]: treesize reduction 174, result has 37.4 percent of original size [2019-11-20 11:43:13,709 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:43:13,709 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:108, output treesize:104 [2019-11-20 11:46:53,470 WARN L191 SmtUtils]: Spent 3.66 m on a formula simplification. DAG size of input: 243 DAG size of output: 156 [2019-11-20 11:46:53,470 INFO L343 Elim1Store]: treesize reduction 311, result has 60.9 percent of original size [2019-11-20 11:46:53,471 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 542 [2019-11-20 11:46:53,473 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:46:53,807 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 49 [2019-11-20 11:46:53,807 INFO L567 ElimStorePlain]: treesize reduction 434, result has 21.1 percent of original size [2019-11-20 11:46:53,808 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:46:53,808 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:120, output treesize:116 [2019-11-20 11:48:28,388 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 11:48:28,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 11:48:28,590 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:118) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:178) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 55 more [2019-11-20 11:48:28,594 INFO L168 Benchmark]: Toolchain (without parser) took 663808.85 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 508.0 MB). Free memory was 940.8 MB in the beginning and 1.4 GB in the end (delta: -435.5 MB). Peak memory consumption was 72.6 MB. Max. memory is 11.5 GB. [2019-11-20 11:48:28,595 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:48:28,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 855.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:48:28,595 INFO L168 Benchmark]: Boogie Preprocessor took 106.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:48:28,595 INFO L168 Benchmark]: RCFGBuilder took 1800.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 111.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:48:28,596 INFO L168 Benchmark]: TraceAbstraction took 661042.55 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 346.0 MB). Free memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: -371.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:48:28,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 855.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 106.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1800.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 111.3 MB). Peak memory consumption was 111.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 661042.55 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 346.0 MB). Free memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: -371.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...