./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:16:56,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:16:56,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:16:56,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:16:56,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:16:56,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:16:56,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:16:56,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:16:56,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:16:56,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:16:56,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:16:56,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:16:56,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:16:56,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:16:56,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:16:56,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:16:56,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:16:56,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:16:56,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:16:56,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:16:56,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:16:56,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:16:57,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:16:57,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:16:57,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:16:57,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:16:57,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:16:57,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:16:57,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:16:57,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:16:57,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:16:57,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:16:57,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:16:57,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:16:57,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:16:57,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:16:57,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:16:57,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:16:57,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:16:57,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:16:57,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:16:57,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:16:57,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:16:57,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:16:57,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:16:57,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:16:57,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:16:57,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:16:57,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:16:57,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:16:57,047 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:16:57,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:16:57,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:16:57,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:16:57,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:16:57,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:16:57,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:16:57,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:16:57,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:16:57,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:16:57,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:16:57,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:16:57,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:16:57,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:16:57,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:16:57,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:16:57,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:16:57,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:16:57,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:16:57,051 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:16:57,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:16:57,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:16:57,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:16:57,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-11-13 18:16:57,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:16:57,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:16:57,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:16:57,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:16:57,326 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:16:57,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-13 18:16:57,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/data/771264be8/34789c7c57ce4572b48e807b62db4687/FLAG379fa857d [2021-11-13 18:16:58,421 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:16:58,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-13 18:16:58,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/data/771264be8/34789c7c57ce4572b48e807b62db4687/FLAG379fa857d [2021-11-13 18:16:58,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/data/771264be8/34789c7c57ce4572b48e807b62db4687 [2021-11-13 18:16:58,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:16:58,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:16:58,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:16:58,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:16:58,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:16:58,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:16:58" (1/1) ... [2021-11-13 18:16:58,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ef1efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:16:58, skipping insertion in model container [2021-11-13 18:16:58,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:16:58" (1/1) ... [2021-11-13 18:16:58,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:16:58,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:17:04,361 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-13 18:17:04,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:17:04,873 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:17:05,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-13 18:17:05,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:17:05,952 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:17:05,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05 WrapperNode [2021-11-13 18:17:05,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:17:05,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:17:05,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:17:05,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:17:05,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:17:06,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:17:06,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:17:06,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:17:06,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:06,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:07,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:07,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:17:07,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:17:07,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:17:07,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:17:07,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (1/1) ... [2021-11-13 18:17:07,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:17:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:07,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:07,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:17:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 18:17:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 18:17:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msix_exact [2021-11-13 18:17:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msix_exact [2021-11-13 18:17:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_signal_notify [2021-11-13 18:17:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_signal_notify [2021-11-13 18:17:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-13 18:17:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-13 18:17:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_exists [2021-11-13 18:17:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_exists [2021-11-13 18:17:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_code_active [2021-11-13 18:17:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_code_active [2021-11-13 18:17:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_subscriber_mutex [2021-11-13 18:17:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_subscriber_mutex [2021-11-13 18:17:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-13 18:17:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-13 18:17:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:17:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:17:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_open [2021-11-13 18:17:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_open [2021-11-13 18:17:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unregister_user_memory [2021-11-13 18:17:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unregister_user_memory [2021-11-13 18:17:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_add_notification [2021-11-13 18:17:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_add_notification [2021-11-13 18:17:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_unlocked_ioctl [2021-11-13 18:17:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_unlocked_ioctl [2021-11-13 18:17:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 18:17:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 18:17:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:17:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:17:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get_id [2021-11-13 18:17:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get_id [2021-11-13 18:17:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 18:17:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 18:17:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_has_entry [2021-11-13 18:17:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_has_entry [2021-11-13 18:17:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-13 18:17:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-13 18:17:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_send_datagram [2021-11-13 18:17:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_send_datagram [2021-11-13 18:17:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-13 18:17:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-13 18:17:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get [2021-11-13 18:17:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get [2021-11-13 18:17:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_entry [2021-11-13 18:17:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_entry [2021-11-13 18:17:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-11-13 18:17:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-11-13 18:17:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure qp_acquire_queue_mutex [2021-11-13 18:17:07,277 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_acquire_queue_mutex [2021-11-13 18:17:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_get_context_id [2021-11-13 18:17:07,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_get_context_id [2021-11-13 18:17:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_map_queues [2021-11-13 18:17:07,278 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_map_queues [2021-11-13 18:17:07,278 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_add [2021-11-13 18:17:07,278 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_add [2021-11-13 18:17:07,278 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 18:17:07,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 18:17:07,280 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:17:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:17:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock___1 [2021-11-13 18:17:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock___1 [2021-11-13 18:17:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2021-11-13 18:17:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2021-11-13 18:17:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_get_head [2021-11-13 18:17:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_get_head [2021-11-13 18:17:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-13 18:17:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-13 18:17:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2021-11-13 18:17:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2021-11-13 18:17:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2021-11-13 18:17:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2021-11-13 18:17:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 18:17:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 18:17:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-13 18:17:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 18:17:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 18:17:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_qp_list [2021-11-13 18:17:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_qp_list [2021-11-13 18:17:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-13 18:17:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-13 18:17:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:17:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-13 18:17:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-13 18:17:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-13 18:17:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-13 18:17:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-13 18:17:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-13 18:17:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:17:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:17:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-13 18:17:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-13 18:17:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:17:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:17:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:17:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure qp_reset_saved_headers [2021-11-13 18:17:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_reset_saved_headers [2021-11-13 18:17:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_handle [2021-11-13 18:17:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_handle [2021-11-13 18:17:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_add_entry [2021-11-13 18:17:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_add_entry [2021-11-13 18:17:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid [2021-11-13 18:17:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid [2021-11-13 18:17:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-13 18:17:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-13 18:17:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:17:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-13 18:17:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-13 18:17:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2021-11-13 18:17:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2021-11-13 18:17:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:17:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2021-11-13 18:17:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2021-11-13 18:17:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_find [2021-11-13 18:17:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_find [2021-11-13 18:17:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:17:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:17:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure __validate_creds [2021-11-13 18:17:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __validate_creds [2021-11-13 18:17:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-13 18:17:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-13 18:17:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_clear_notify_call [2021-11-13 18:17:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_clear_notify_call [2021-11-13 18:17:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-13 18:17:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-13 18:17:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-13 18:17:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-13 18:17:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-13 18:17:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-13 18:17:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 18:17:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 18:17:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_unset_notify [2021-11-13 18:17:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_unset_notify [2021-11-13 18:17:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure __hlist_del [2021-11-13 18:17:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __hlist_del [2021-11-13 18:17:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_exit [2021-11-13 18:17:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_exit [2021-11-13 18:17:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_destroy [2021-11-13 18:17:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_destroy [2021-11-13 18:17:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure get_cred [2021-11-13 18:17:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cred [2021-11-13 18:17:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-13 18:17:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-13 18:17:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-13 18:17:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-13 18:17:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure qp_lock [2021-11-13 18:17:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_lock [2021-11-13 18:17:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-13 18:17:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-13 18:17:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_by_handle [2021-11-13 18:17:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_by_handle [2021-11-13 18:17:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:17:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:17:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer_local [2021-11-13 18:17:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer_local [2021-11-13 18:17:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure vunmap [2021-11-13 18:17:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure vunmap [2021-11-13 18:17:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_get_user_memory [2021-11-13 18:17:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_get_user_memory [2021-11-13 18:17:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-13 18:17:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-13 18:17:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:17:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure qp_unlock [2021-11-13 18:17:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_unlock [2021-11-13 18:17:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-13 18:17:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-13 18:17:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_probe_device [2021-11-13 18:17:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_probe_device [2021-11-13 18:17:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___1 [2021-11-13 18:17:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___1 [2021-11-13 18:17:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___0 [2021-11-13 18:17:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___0 [2021-11-13 18:17:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_alloc_queue [2021-11-13 18:17:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_alloc_queue [2021-11-13 18:17:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:17:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:17:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-13 18:17:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-13 18:17:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:17:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:17:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_poll [2021-11-13 18:17:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_poll [2021-11-13 18:17:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-13 18:17:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-13 18:17:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-13 18:17:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-13 18:17:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_pages [2021-11-13 18:17:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_pages [2021-11-13 18:17:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure qp_cleanup_queue_mutex [2021-11-13 18:17:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_cleanup_queue_mutex [2021-11-13 18:17:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_size [2021-11-13 18:17:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_size [2021-11-13 18:17:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_hypercall [2021-11-13 18:17:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_hypercall [2021-11-13 18:17:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-13 18:17:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-13 18:17:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 18:17:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 18:17:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_remove_entry [2021-11-13 18:17:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_remove_entry [2021-11-13 18:17:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 18:17:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 18:17:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_q_header_init [2021-11-13 18:17:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_q_header_init [2021-11-13 18:17:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add_rcu [2021-11-13 18:17:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add_rcu [2021-11-13 18:17:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_register_user_memory [2021-11-13 18:17:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_register_user_memory [2021-11-13 18:17:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 18:17:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 18:17:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-13 18:17:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-13 18:17:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure drv_cp_harray_to_user [2021-11-13 18:17:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure drv_cp_harray_to_user [2021-11-13 18:17:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:17:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:17:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:17:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:17:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_tail [2021-11-13 18:17:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_tail [2021-11-13 18:17:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_subscriber_mutex [2021-11-13 18:17:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_subscriber_mutex [2021-11-13 18:17:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-13 18:17:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-13 18:17:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_supports_host_qp [2021-11-13 18:17:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_supports_host_qp [2021-11-13 18:17:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:17:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:17:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:17:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:17:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-13 18:17:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-13 18:17:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-13 18:17:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-13 18:17:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-13 18:17:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-13 18:17:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unmap_queues [2021-11-13 18:17:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unmap_queues [2021-11-13 18:17:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_rcu [2021-11-13 18:17:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_rcu [2021-11-13 18:17:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_qp_list [2021-11-13 18:17:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_qp_list [2021-11-13 18:17:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:17:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:17:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:17:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:17:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 18:17:07,425 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 18:17:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:17:07,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:17:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-13 18:17:07,426 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-13 18:17:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:17:07,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:17:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-11-13 18:17:07,427 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-11-13 18:17:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2021-11-13 18:17:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2021-11-13 18:17:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_notify_dbell [2021-11-13 18:17:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_notify_dbell [2021-11-13 18:17:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_append_entry [2021-11-13 18:17:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_append_entry [2021-11-13 18:17:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-13 18:17:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-13 18:17:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 18:17:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 18:17:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_handle_to_entry [2021-11-13 18:17:07,448 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_handle_to_entry [2021-11-13 18:17:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-13 18:17:07,448 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-13 18:17:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-13 18:17:07,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-13 18:17:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:17:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:17:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:17:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_hash [2021-11-13 18:17:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_hash [2021-11-13 18:17:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_create [2021-11-13 18:17:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_create [2021-11-13 18:17:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure event_find [2021-11-13 18:17:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure event_find [2021-11-13 18:17:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_alloc [2021-11-13 18:17:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_alloc [2021-11-13 18:17:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:17:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-13 18:17:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-13 18:17:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-13 18:17:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-13 18:17:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure hash_32 [2021-11-13 18:17:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_32 [2021-11-13 18:17:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail_rcu [2021-11-13 18:17:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail_rcu [2021-11-13 18:17:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock___1 [2021-11-13 18:17:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock___1 [2021-11-13 18:17:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-13 18:17:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-13 18:17:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:17:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-13 18:17:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-13 18:17:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 18:17:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 18:17:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:17:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:17:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-13 18:17:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-13 18:17:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_dispatch [2021-11-13 18:17:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_dispatch [2021-11-13 18:17:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_queue_mutex [2021-11-13 18:17:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_queue_mutex [2021-11-13 18:17:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 18:17:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 18:17:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_route [2021-11-13 18:17:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_route [2021-11-13 18:17:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-13 18:17:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-13 18:17:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure qp_free_queue [2021-11-13 18:17:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_free_queue [2021-11-13 18:17:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_free_queue [2021-11-13 18:17:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_free_queue [2021-11-13 18:17:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-13 18:17:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-13 18:17:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure atomic64_set [2021-11-13 18:17:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic64_set [2021-11-13 18:17:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-13 18:17:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-13 18:17:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_exists [2021-11-13 18:17:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_exists [2021-11-13 18:17:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-11-13 18:17:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-11-13 18:17:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-13 18:17:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-13 18:17:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:17:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:17:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure qp_init_queue_mutex [2021-11-13 18:17:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_init_queue_mutex [2021-11-13 18:17:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:17:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-13 18:17:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-13 18:17:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-11-13 18:17:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-11-13 18:17:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-13 18:17:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-13 18:17:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:17:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:17:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure put_cred [2021-11-13 18:17:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cred [2021-11-13 18:17:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work___0 [2021-11-13 18:17:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work___0 [2021-11-13 18:17:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-13 18:17:07,461 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-13 18:17:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 18:17:07,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 18:17:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-13 18:17:07,461 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-13 18:17:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_HLIST_NODE [2021-11-13 18:17:07,461 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_HLIST_NODE [2021-11-13 18:17:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 18:17:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 18:17:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-13 18:17:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-13 18:17:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_equal [2021-11-13 18:17:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_equal [2021-11-13 18:17:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_destroy [2021-11-13 18:17:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_destroy [2021-11-13 18:17:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_handle_to_entry [2021-11-13 18:17:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_handle_to_entry [2021-11-13 18:17:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 18:17:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 18:17:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-13 18:17:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-13 18:17:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure handle_arr_calc_size [2021-11-13 18:17:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_arr_calc_size [2021-11-13 18:17:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2021-11-13 18:17:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2021-11-13 18:17:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_unhashed [2021-11-13 18:17:07,465 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_unhashed [2021-11-13 18:17:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_alloc [2021-11-13 18:17:07,465 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_alloc [2021-11-13 18:17:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-13 18:17:07,465 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-13 18:17:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2021-11-13 18:17:07,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2021-11-13 18:17:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 18:17:07,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 18:17:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 18:17:07,467 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 18:17:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2021-11-13 18:17:07,467 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2021-11-13 18:17:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_get [2021-11-13 18:17:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_get [2021-11-13 18:17:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2021-11-13 18:17:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2021-11-13 18:17:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-13 18:17:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-13 18:17:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-13 18:17:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-13 18:17:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_entry [2021-11-13 18:17:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_entry [2021-11-13 18:17:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_unsubscribe [2021-11-13 18:17:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_unsubscribe [2021-11-13 18:17:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_deny_interaction [2021-11-13 18:17:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_deny_interaction [2021-11-13 18:17:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-13 18:17:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-13 18:17:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_create [2021-11-13 18:17:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_create [2021-11-13 18:17:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_code_active [2021-11-13 18:17:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_code_active [2021-11-13 18:17:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:17:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:17:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:17:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:17:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-13 18:17:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-13 18:17:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-13 18:17:07,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-13 18:17:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_lookup [2021-11-13 18:17:07,472 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_lookup [2021-11-13 18:17:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-13 18:17:07,472 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-13 18:17:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:17:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_create [2021-11-13 18:17:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_create [2021-11-13 18:17:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-13 18:17:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-13 18:17:09,347 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:17:45,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:17:45,038 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:17:45,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:45 BoogieIcfgContainer [2021-11-13 18:17:45,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:17:45,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:17:45,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:17:45,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:17:45,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:16:58" (1/3) ... [2021-11-13 18:17:45,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2a862f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:17:45, skipping insertion in model container [2021-11-13 18:17:45,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:05" (2/3) ... [2021-11-13 18:17:45,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2a862f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:17:45, skipping insertion in model container [2021-11-13 18:17:45,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:45" (3/3) ... [2021-11-13 18:17:45,054 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-13 18:17:45,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:17:45,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:17:45,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:17:45,145 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:17:45,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:17:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 3381 states, 2333 states have (on average 1.3686240891555936) internal successors, (3193), 2400 states have internal predecessors, (3193), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) [2021-11-13 18:17:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 18:17:45,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:17:45,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:45,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:17:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash -221624845, now seen corresponding path program 1 times [2021-11-13 18:17:45,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:45,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926430151] [2021-11-13 18:17:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:45,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:46,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:46,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926430151] [2021-11-13 18:17:46,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926430151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:46,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:46,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:17:46,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983266998] [2021-11-13 18:17:46,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:46,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:17:46,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:17:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:17:46,445 INFO L87 Difference]: Start difference. First operand has 3381 states, 2333 states have (on average 1.3686240891555936) internal successors, (3193), 2400 states have internal predecessors, (3193), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:46,831 INFO L93 Difference]: Finished difference Result 6757 states and 9929 transitions. [2021-11-13 18:17:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:17:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 18:17:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:17:46,880 INFO L225 Difference]: With dead ends: 6757 [2021-11-13 18:17:46,881 INFO L226 Difference]: Without dead ends: 3373 [2021-11-13 18:17:46,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:17:46,911 INFO L933 BasicCegarLoop]: 4856 mSDtfsCounter, 1 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9709 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:17:46,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9709 Invalid, 5 Unknown, 0 Unchecked, 51.68ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 13.49ms Time] [2021-11-13 18:17:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2021-11-13 18:17:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3371. [2021-11-13 18:17:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3371 states, 2329 states have (on average 1.3662516101331044) internal successors, (3182), 2390 states have internal predecessors, (3182), 839 states have call successors, (839), 203 states have call predecessors, (839), 202 states have return successors, (824), 818 states have call predecessors, (824), 824 states have call successors, (824) [2021-11-13 18:17:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 4845 transitions. [2021-11-13 18:17:47,218 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 4845 transitions. Word has length 27 [2021-11-13 18:17:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:17:47,219 INFO L470 AbstractCegarLoop]: Abstraction has 3371 states and 4845 transitions. [2021-11-13 18:17:47,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 4845 transitions. [2021-11-13 18:17:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-13 18:17:47,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:17:47,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:47,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:17:47,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:17:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1647899974, now seen corresponding path program 1 times [2021-11-13 18:17:47,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:47,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431218618] [2021-11-13 18:17:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:47,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:17:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:47,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:47,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431218618] [2021-11-13 18:17:47,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431218618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:47,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:47,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:17:47,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993896679] [2021-11-13 18:17:47,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:47,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:17:47,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:47,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:17:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:17:47,902 INFO L87 Difference]: Start difference. First operand 3371 states and 4845 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:17:50,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:52,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:58,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:03,621 INFO L93 Difference]: Finished difference Result 10256 states and 14831 transitions. [2021-11-13 18:18:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:18:03,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-13 18:18:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:03,685 INFO L225 Difference]: With dead ends: 10256 [2021-11-13 18:18:03,685 INFO L226 Difference]: Without dead ends: 6891 [2021-11-13 18:18:03,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:18:03,708 INFO L933 BasicCegarLoop]: 7939 mSDtfsCounter, 5335 mSDsluCounter, 7645 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 1673 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13654.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 15584 SdHoareTripleChecker+Invalid, 4522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.11ms SdHoareTripleChecker+Time, 1673 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15189.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:03,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5924 Valid, 15584 Invalid, 4522 Unknown, 0 Unchecked, 84.11ms Time], IncrementalHoareTripleChecker [1673 Valid, 2846 Invalid, 3 Unknown, 0 Unchecked, 15189.69ms Time] [2021-11-13 18:18:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6891 states. [2021-11-13 18:18:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6891 to 6637. [2021-11-13 18:18:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6637 states, 4589 states have (on average 1.3660928306820659) internal successors, (6269), 4696 states have internal predecessors, (6269), 1643 states have call successors, (1643), 405 states have call predecessors, (1643), 404 states have return successors, (1628), 1616 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-11-13 18:18:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6637 states to 6637 states and 9540 transitions. [2021-11-13 18:18:04,036 INFO L78 Accepts]: Start accepts. Automaton has 6637 states and 9540 transitions. Word has length 29 [2021-11-13 18:18:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:04,037 INFO L470 AbstractCegarLoop]: Abstraction has 6637 states and 9540 transitions. [2021-11-13 18:18:04,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6637 states and 9540 transitions. [2021-11-13 18:18:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 18:18:04,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:04,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:04,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:18:04,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -8374377, now seen corresponding path program 1 times [2021-11-13 18:18:04,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:04,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779556140] [2021-11-13 18:18:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:04,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:04,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:04,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779556140] [2021-11-13 18:18:04,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779556140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:04,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903198807] [2021-11-13 18:18:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:04,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:04,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:04,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:04,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:18:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 5284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:06,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:07,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:07,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903198807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:07,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:07,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:07,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490748789] [2021-11-13 18:18:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:07,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:07,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:07,019 INFO L87 Difference]: Start difference. First operand 6637 states and 9540 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:07,282 INFO L93 Difference]: Finished difference Result 6639 states and 9541 transitions. [2021-11-13 18:18:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-11-13 18:18:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:07,339 INFO L225 Difference]: With dead ends: 6639 [2021-11-13 18:18:07,340 INFO L226 Difference]: Without dead ends: 6636 [2021-11-13 18:18:07,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:07,347 INFO L933 BasicCegarLoop]: 4841 mSDtfsCounter, 4812 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4812 SdHoareTripleChecker+Valid, 4841 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:07,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4812 Valid, 4841 Invalid, 1 Unknown, 0 Unchecked, 108.90ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 5.91ms Time] [2021-11-13 18:18:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-11-13 18:18:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6636. [2021-11-13 18:18:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6636 states, 4589 states have (on average 1.3658749182828502) internal successors, (6268), 4695 states have internal predecessors, (6268), 1642 states have call successors, (1642), 405 states have call predecessors, (1642), 404 states have return successors, (1628), 1616 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-11-13 18:18:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6636 states to 6636 states and 9538 transitions. [2021-11-13 18:18:07,690 INFO L78 Accepts]: Start accepts. Automaton has 6636 states and 9538 transitions. Word has length 33 [2021-11-13 18:18:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:07,691 INFO L470 AbstractCegarLoop]: Abstraction has 6636 states and 9538 transitions. [2021-11-13 18:18:07,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6636 states and 9538 transitions. [2021-11-13 18:18:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 18:18:07,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:07,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:07,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:07,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:07,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash -260968426, now seen corresponding path program 1 times [2021-11-13 18:18:07,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:07,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568279236] [2021-11-13 18:18:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:07,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:08,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:08,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568279236] [2021-11-13 18:18:08,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568279236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:08,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494556365] [2021-11-13 18:18:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:08,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:08,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:08,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:18:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:10,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 5286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:10,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:10,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:10,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494556365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:10,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:10,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:10,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071420123] [2021-11-13 18:18:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:10,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:10,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:10,637 INFO L87 Difference]: Start difference. First operand 6636 states and 9538 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:10,819 INFO L93 Difference]: Finished difference Result 6638 states and 9539 transitions. [2021-11-13 18:18:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:10,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-11-13 18:18:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:10,868 INFO L225 Difference]: With dead ends: 6638 [2021-11-13 18:18:10,869 INFO L226 Difference]: Without dead ends: 6635 [2021-11-13 18:18:10,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:10,875 INFO L933 BasicCegarLoop]: 4839 mSDtfsCounter, 4809 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:10,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4809 Valid, 4839 Invalid, 1 Unknown, 0 Unchecked, 11.72ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.92ms Time] [2021-11-13 18:18:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2021-11-13 18:18:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 6635. [2021-11-13 18:18:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6635 states, 4589 states have (on average 1.3656570058836348) internal successors, (6267), 4694 states have internal predecessors, (6267), 1641 states have call successors, (1641), 405 states have call predecessors, (1641), 404 states have return successors, (1628), 1616 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-11-13 18:18:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 9536 transitions. [2021-11-13 18:18:11,205 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 9536 transitions. Word has length 34 [2021-11-13 18:18:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:11,205 INFO L470 AbstractCegarLoop]: Abstraction has 6635 states and 9536 transitions. [2021-11-13 18:18:11,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 9536 transitions. [2021-11-13 18:18:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 18:18:11,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:11,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:11,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:11,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:11,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 498555514, now seen corresponding path program 1 times [2021-11-13 18:18:11,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:11,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866397626] [2021-11-13 18:18:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:11,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:11,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:11,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866397626] [2021-11-13 18:18:11,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866397626] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:11,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920654173] [2021-11-13 18:18:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:11,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:11,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:11,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:11,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:18:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:13,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:13,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:14,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:14,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920654173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:14,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:14,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:14,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956189860] [2021-11-13 18:18:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:14,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:14,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:14,074 INFO L87 Difference]: Start difference. First operand 6635 states and 9536 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:14,355 INFO L93 Difference]: Finished difference Result 10444 states and 14724 transitions. [2021-11-13 18:18:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:14,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-11-13 18:18:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:14,439 INFO L225 Difference]: With dead ends: 10444 [2021-11-13 18:18:14,439 INFO L226 Difference]: Without dead ends: 10440 [2021-11-13 18:18:14,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:14,446 INFO L933 BasicCegarLoop]: 5316 mSDtfsCounter, 4728 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 8035 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:14,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 8035 Invalid, 7 Unknown, 0 Unchecked, 18.45ms Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 7.31ms Time] [2021-11-13 18:18:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10440 states. [2021-11-13 18:18:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10440 to 10432. [2021-11-13 18:18:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 7162 states have (on average 1.349064507120916) internal successors, (9662), 7337 states have internal predecessors, (9662), 2530 states have call successors, (2530), 740 states have call predecessors, (2530), 739 states have return successors, (2519), 2495 states have call predecessors, (2519), 2519 states have call successors, (2519) [2021-11-13 18:18:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 14711 transitions. [2021-11-13 18:18:14,927 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 14711 transitions. Word has length 35 [2021-11-13 18:18:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:14,929 INFO L470 AbstractCegarLoop]: Abstraction has 10432 states and 14711 transitions. [2021-11-13 18:18:14,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 14711 transitions. [2021-11-13 18:18:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 18:18:14,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:14,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:14,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:15,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:15,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1726001255, now seen corresponding path program 1 times [2021-11-13 18:18:15,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:15,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327466343] [2021-11-13 18:18:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:15,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:15,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:15,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327466343] [2021-11-13 18:18:15,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327466343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:15,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614534102] [2021-11-13 18:18:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:15,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:15,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:15,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:18:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:17,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 5290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:17,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:17,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:17,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614534102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:17,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:17,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:17,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119179606] [2021-11-13 18:18:17,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:17,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:17,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:17,858 INFO L87 Difference]: Start difference. First operand 10432 states and 14711 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:18,271 INFO L93 Difference]: Finished difference Result 10434 states and 14712 transitions. [2021-11-13 18:18:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:18,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-11-13 18:18:18,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:18,318 INFO L225 Difference]: With dead ends: 10434 [2021-11-13 18:18:18,318 INFO L226 Difference]: Without dead ends: 10431 [2021-11-13 18:18:18,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:18,325 INFO L933 BasicCegarLoop]: 4833 mSDtfsCounter, 4801 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:18,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4801 Valid, 4833 Invalid, 1 Unknown, 0 Unchecked, 12.25ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.62ms Time] [2021-11-13 18:18:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-11-13 18:18:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2021-11-13 18:18:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 7162 states have (on average 1.3489248813180676) internal successors, (9661), 7336 states have internal predecessors, (9661), 2529 states have call successors, (2529), 740 states have call predecessors, (2529), 739 states have return successors, (2519), 2495 states have call predecessors, (2519), 2519 states have call successors, (2519) [2021-11-13 18:18:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 14709 transitions. [2021-11-13 18:18:18,913 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 14709 transitions. Word has length 36 [2021-11-13 18:18:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:18,914 INFO L470 AbstractCegarLoop]: Abstraction has 10431 states and 14709 transitions. [2021-11-13 18:18:18,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 14709 transitions. [2021-11-13 18:18:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-13 18:18:18,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:18,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:18,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:19,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:19,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1967779491, now seen corresponding path program 1 times [2021-11-13 18:18:19,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:19,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779514677] [2021-11-13 18:18:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:19,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:19,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:19,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779514677] [2021-11-13 18:18:19,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779514677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:19,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986046144] [2021-11-13 18:18:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:19,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:19,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:19,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:19,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:18:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:21,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 5292 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:21,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:22,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:22,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986046144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:22,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:22,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:22,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695576440] [2021-11-13 18:18:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:22,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:22,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:22,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:22,010 INFO L87 Difference]: Start difference. First operand 10431 states and 14709 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:22,566 INFO L93 Difference]: Finished difference Result 27282 states and 38819 transitions. [2021-11-13 18:18:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:22,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-11-13 18:18:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:22,667 INFO L225 Difference]: With dead ends: 27282 [2021-11-13 18:18:22,667 INFO L226 Difference]: Without dead ends: 16857 [2021-11-13 18:18:22,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:22,736 INFO L933 BasicCegarLoop]: 5599 mSDtfsCounter, 4094 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 8614 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:22,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4094 Valid, 8614 Invalid, 11 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 13.68ms Time] [2021-11-13 18:18:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2021-11-13 18:18:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16814. [2021-11-13 18:18:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16814 states, 11541 states have (on average 1.3417381509401265) internal successors, (15485), 11825 states have internal predecessors, (15485), 3966 states have call successors, (3966), 1300 states have call predecessors, (3966), 1306 states have return successors, (4152), 3925 states have call predecessors, (4152), 3952 states have call successors, (4152) [2021-11-13 18:18:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16814 states to 16814 states and 23603 transitions. [2021-11-13 18:18:23,706 INFO L78 Accepts]: Start accepts. Automaton has 16814 states and 23603 transitions. Word has length 37 [2021-11-13 18:18:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:23,706 INFO L470 AbstractCegarLoop]: Abstraction has 16814 states and 23603 transitions. [2021-11-13 18:18:23,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16814 states and 23603 transitions. [2021-11-13 18:18:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:18:23,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:23,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:23,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:23,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:23,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -872965348, now seen corresponding path program 1 times [2021-11-13 18:18:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:23,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729998349] [2021-11-13 18:18:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:23,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:24,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:24,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729998349] [2021-11-13 18:18:24,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729998349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:24,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487457192] [2021-11-13 18:18:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:24,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:24,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:24,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:24,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:18:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:26,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 5294 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:26,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:26,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:26,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487457192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:26,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:26,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:26,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410613524] [2021-11-13 18:18:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:26,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:26,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:26,740 INFO L87 Difference]: Start difference. First operand 16814 states and 23603 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:27,802 INFO L93 Difference]: Finished difference Result 50386 states and 72507 transitions. [2021-11-13 18:18:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:27,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-13 18:18:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:27,998 INFO L225 Difference]: With dead ends: 50386 [2021-11-13 18:18:27,998 INFO L226 Difference]: Without dead ends: 33578 [2021-11-13 18:18:28,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:28,104 INFO L933 BasicCegarLoop]: 5935 mSDtfsCounter, 4869 mSDsluCounter, 4896 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4869 SdHoareTripleChecker+Valid, 10831 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.31ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:28,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4869 Valid, 10831 Invalid, 13 Unknown, 0 Unchecked, 24.31ms Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 13.75ms Time] [2021-11-13 18:18:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33578 states. [2021-11-13 18:18:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33578 to 33539. [2021-11-13 18:18:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33539 states, 23027 states have (on average 1.3420766925782777) internal successors, (30904), 23588 states have internal predecessors, (30904), 7907 states have call successors, (7907), 2595 states have call predecessors, (7907), 2604 states have return successors, (9180), 7829 states have call predecessors, (9180), 7892 states have call successors, (9180) [2021-11-13 18:18:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33539 states to 33539 states and 47991 transitions. [2021-11-13 18:18:29,958 INFO L78 Accepts]: Start accepts. Automaton has 33539 states and 47991 transitions. Word has length 38 [2021-11-13 18:18:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:29,958 INFO L470 AbstractCegarLoop]: Abstraction has 33539 states and 47991 transitions. [2021-11-13 18:18:29,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 33539 states and 47991 transitions. [2021-11-13 18:18:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 18:18:29,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:29,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:30,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:30,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:18:30,184 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1293460416, now seen corresponding path program 1 times [2021-11-13 18:18:30,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:30,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273972635] [2021-11-13 18:18:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:30,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:18:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:30,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:30,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273972635] [2021-11-13 18:18:30,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273972635] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:30,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390529677] [2021-11-13 18:18:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:30,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:30,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:30,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:18:30,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:18:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:32,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 5296 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:32,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:18:33,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:18:33,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390529677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:33,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:33,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-13 18:18:33,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504355670] [2021-11-13 18:18:33,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:33,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:33,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:33,004 INFO L87 Difference]: Start difference. First operand 33539 states and 47991 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:33,695 INFO L93 Difference]: Finished difference Result 33667 states and 48081 transitions. [2021-11-13 18:18:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:33,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-11-13 18:18:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:33,914 INFO L225 Difference]: With dead ends: 33667 [2021-11-13 18:18:33,914 INFO L226 Difference]: Without dead ends: 33635 [2021-11-13 18:18:33,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:33,948 INFO L933 BasicCegarLoop]: 4827 mSDtfsCounter, 4742 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:33,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4742 Valid, 4881 Invalid, 6 Unknown, 0 Unchecked, 10.03ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 5.81ms Time] [2021-11-13 18:18:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33635 states. [2021-11-13 18:18:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33635 to 33633. [2021-11-13 18:18:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33633 states, 23093 states have (on average 1.3401463646992595) internal successors, (30948), 23653 states have internal predecessors, (30948), 7900 states have call successors, (7900), 2630 states have call predecessors, (7900), 2639 states have return successors, (9174), 7823 states have call predecessors, (9174), 7886 states have call successors, (9174) [2021-11-13 18:18:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33633 states to 33633 states and 48022 transitions. [2021-11-13 18:18:35,933 INFO L78 Accepts]: Start accepts. Automaton has 33633 states and 48022 transitions. Word has length 39 [2021-11-13 18:18:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:35,933 INFO L470 AbstractCegarLoop]: Abstraction has 33633 states and 48022 transitions. [2021-11-13 18:18:35,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 33633 states and 48022 transitions. [2021-11-13 18:18:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:18:35,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:35,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:35,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:36,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:18:36,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1815788574, now seen corresponding path program 1 times [2021-11-13 18:18:36,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:18:36,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813285378] [2021-11-13 18:18:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:36,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:18:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:18:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:18:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:18:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:18:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:18:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:18:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:18:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:18:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:36,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:18:36,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813285378] [2021-11-13 18:18:36,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813285378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:36,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:36,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:18:36,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579422759] [2021-11-13 18:18:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:36,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:18:36,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:18:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:18:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:36,882 INFO L87 Difference]: Start difference. First operand 33633 states and 48022 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:18:39,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:41,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:43,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:48,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:56,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:57,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:09,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:12,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:25,220 INFO L93 Difference]: Finished difference Result 113655 states and 166762 transitions. [2021-11-13 18:19:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:19:25,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2021-11-13 18:19:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:25,939 INFO L225 Difference]: With dead ends: 113655 [2021-11-13 18:19:25,939 INFO L226 Difference]: Without dead ends: 80028 [2021-11-13 18:19:26,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:19:26,093 INFO L933 BasicCegarLoop]: 4668 mSDtfsCounter, 11881 mSDsluCounter, 6654 mSDsCounter, 0 mSdLazyCounter, 10611 mSolverCounterSat, 7540 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41302.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12629 SdHoareTripleChecker+Valid, 11322 SdHoareTripleChecker+Invalid, 18156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 128.99ms SdHoareTripleChecker+Time, 7540 IncrementalHoareTripleChecker+Valid, 10611 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45020.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:26,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12629 Valid, 11322 Invalid, 18156 Unknown, 0 Unchecked, 128.99ms Time], IncrementalHoareTripleChecker [7540 Valid, 10611 Invalid, 5 Unknown, 0 Unchecked, 45020.73ms Time] [2021-11-13 18:19:26,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80028 states. [2021-11-13 18:19:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80028 to 72706. [2021-11-13 18:19:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72706 states, 49864 states have (on average 1.3357933579335792) internal successors, (66608), 50940 states have internal predecessors, (66608), 17123 states have call successors, (17123), 5257 states have call predecessors, (17123), 5718 states have return successors, (21132), 17520 states have call predecessors, (21132), 17108 states have call successors, (21132) [2021-11-13 18:19:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72706 states to 72706 states and 104863 transitions. [2021-11-13 18:19:30,461 INFO L78 Accepts]: Start accepts. Automaton has 72706 states and 104863 transitions. Word has length 70 [2021-11-13 18:19:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 72706 states and 104863 transitions. [2021-11-13 18:19:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:19:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 72706 states and 104863 transitions. [2021-11-13 18:19:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:19:30,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:30,699 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:30,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:19:30,700 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash -783823816, now seen corresponding path program 1 times [2021-11-13 18:19:30,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:19:30,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609546336] [2021-11-13 18:19:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:30,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:19:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:19:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:19:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:19:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:19:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:19:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:19:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:19:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:19:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:19:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:19:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:19:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:19:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:19:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:19:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:19:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:19:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:19:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-13 18:19:31,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:19:31,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609546336] [2021-11-13 18:19:31,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609546336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:31,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:31,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:19:31,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656652220] [2021-11-13 18:19:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:31,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:19:31,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:19:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:19:31,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:31,403 INFO L87 Difference]: Start difference. First operand 72706 states and 104863 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:19:33,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:35,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:37,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:45,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:50,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:58,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:00,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:17,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:20,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:22,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:32,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:32,720 INFO L93 Difference]: Finished difference Result 177924 states and 260235 transitions. [2021-11-13 18:20:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:20:32,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2021-11-13 18:20:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:33,439 INFO L225 Difference]: With dead ends: 177924 [2021-11-13 18:20:33,439 INFO L226 Difference]: Without dead ends: 105224 [2021-11-13 18:20:33,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:20:33,699 INFO L933 BasicCegarLoop]: 3928 mSDtfsCounter, 10362 mSDsluCounter, 3802 mSDsCounter, 0 mSdLazyCounter, 13537 mSolverCounterSat, 7048 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51895.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11041 SdHoareTripleChecker+Valid, 7730 SdHoareTripleChecker+Invalid, 20591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 131.66ms SdHoareTripleChecker+Time, 7048 IncrementalHoareTripleChecker+Valid, 13537 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56332.11ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:33,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11041 Valid, 7730 Invalid, 20591 Unknown, 0 Unchecked, 131.66ms Time], IncrementalHoareTripleChecker [7048 Valid, 13537 Invalid, 6 Unknown, 0 Unchecked, 56332.11ms Time] [2021-11-13 18:20:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105224 states. [2021-11-13 18:20:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105224 to 95518. [2021-11-13 18:20:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95518 states, 65397 states have (on average 1.332186491735095) internal successors, (87121), 66871 states have internal predecessors, (87121), 22346 states have call successors, (22346), 7154 states have call predecessors, (22346), 7774 states have return successors, (27627), 22846 states have call predecessors, (27627), 22331 states have call successors, (27627) [2021-11-13 18:20:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95518 states to 95518 states and 137094 transitions. [2021-11-13 18:20:39,668 INFO L78 Accepts]: Start accepts. Automaton has 95518 states and 137094 transitions. Word has length 116 [2021-11-13 18:20:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:39,669 INFO L470 AbstractCegarLoop]: Abstraction has 95518 states and 137094 transitions. [2021-11-13 18:20:39,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:20:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 95518 states and 137094 transitions. [2021-11-13 18:20:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:20:39,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:39,675 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:39,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:20:39,676 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:39,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 605991507, now seen corresponding path program 1 times [2021-11-13 18:20:39,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:39,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496322525] [2021-11-13 18:20:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:39,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:20:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:20:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:20:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:20:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:20:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:20:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:20:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:20:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:20:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:20:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:20:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:20:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:20:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:20:40,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:20:40,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496322525] [2021-11-13 18:20:40,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496322525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:20:40,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259463744] [2021-11-13 18:20:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:40,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:20:40,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:20:40,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:20:40,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:20:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:43,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 6029 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:20:43,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:20:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 18:20:43,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:20:43,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259463744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:43,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:20:43,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-13 18:20:43,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595111947] [2021-11-13 18:20:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:43,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:20:43,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:20:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:20:43,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:20:43,438 INFO L87 Difference]: Start difference. First operand 95518 states and 137094 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 18:20:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:49,770 INFO L93 Difference]: Finished difference Result 236068 states and 338751 transitions. [2021-11-13 18:20:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:20:49,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2021-11-13 18:20:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:50,679 INFO L225 Difference]: With dead ends: 236068 [2021-11-13 18:20:50,679 INFO L226 Difference]: Without dead ends: 140556 [2021-11-13 18:20:51,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:20:51,323 INFO L933 BasicCegarLoop]: 6166 mSDtfsCounter, 4781 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 271.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 10954 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.00ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 289.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:51,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4781 Valid, 10954 Invalid, 22 Unknown, 0 Unchecked, 16.00ms Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 289.55ms Time] [2021-11-13 18:20:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140556 states. [2021-11-13 18:20:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140556 to 140507. [2021-11-13 18:20:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140507 states, 96243 states have (on average 1.332283906362021) internal successors, (128223), 98404 states have internal predecessors, (128223), 32829 states have call successors, (32829), 10529 states have call predecessors, (32829), 11434 states have return successors, (40545), 33563 states have call predecessors, (40545), 32813 states have call successors, (40545) [2021-11-13 18:20:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140507 states to 140507 states and 201597 transitions. [2021-11-13 18:20:59,653 INFO L78 Accepts]: Start accepts. Automaton has 140507 states and 201597 transitions. Word has length 118 [2021-11-13 18:20:59,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:59,654 INFO L470 AbstractCegarLoop]: Abstraction has 140507 states and 201597 transitions. [2021-11-13 18:20:59,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 18:20:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 140507 states and 201597 transitions. [2021-11-13 18:20:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 18:20:59,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:59,662 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:59,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-13 18:20:59,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:20:59,876 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash -960633533, now seen corresponding path program 1 times [2021-11-13 18:20:59,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:20:59,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475944757] [2021-11-13 18:20:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:59,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:21:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:21:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:21:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:21:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:21:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:21:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:21:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 18:21:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:21:01,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:01,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475944757] [2021-11-13 18:21:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475944757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:21:01,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344394556] [2021-11-13 18:21:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:01,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:01,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:01,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:21:01,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d228792-79bf-483c-a87d-72381dfae429/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:21:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:03,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 6293 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:21:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:21:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:21:04,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:21:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:21:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344394556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:21:04,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:21:04,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-11-13 18:21:04,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019091821] [2021-11-13 18:21:04,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:21:04,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:21:04,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:04,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:21:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:21:04,611 INFO L87 Difference]: Start difference. First operand 140507 states and 201597 transitions. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 7 states have internal predecessors, (143), 5 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2021-11-13 18:21:06,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:08,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:15,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:17,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:26,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:35,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:49,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:05,876 INFO L93 Difference]: Finished difference Result 296250 states and 431212 transitions. [2021-11-13 18:22:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:22:05,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 7 states have internal predecessors, (143), 5 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 122 [2021-11-13 18:22:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:06,999 INFO L225 Difference]: With dead ends: 296250 [2021-11-13 18:22:06,999 INFO L226 Difference]: Without dead ends: 155749 [2021-11-13 18:22:07,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:22:07,374 INFO L933 BasicCegarLoop]: 4102 mSDtfsCounter, 4806 mSDsluCounter, 13844 mSDsCounter, 0 mSdLazyCounter, 13220 mSolverCounterSat, 3843 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44913.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5319 SdHoareTripleChecker+Valid, 17946 SdHoareTripleChecker+Invalid, 17067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 163.34ms SdHoareTripleChecker+Time, 3843 IncrementalHoareTripleChecker+Valid, 13220 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48763.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:07,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5319 Valid, 17946 Invalid, 17067 Unknown, 0 Unchecked, 163.34ms Time], IncrementalHoareTripleChecker [3843 Valid, 13220 Invalid, 4 Unknown, 0 Unchecked, 48763.82ms Time] [2021-11-13 18:22:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155749 states.