./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL --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 b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:23:21,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:23:21,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:23:22,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:23:22,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:23:22,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:23:22,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:23:22,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:23:22,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:23:22,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:23:22,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:23:22,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:23:22,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:23:22,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:23:22,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:23:22,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:23:22,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:23:22,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:23:22,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:23:22,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:23:22,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:23:22,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:23:22,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:23:22,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:23:22,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:23:22,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:23:22,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:23:22,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:23:22,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:23:22,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:23:22,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:23:22,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:23:22,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:23:22,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:23:22,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:23:22,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:23:22,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:23:22,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:23:22,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:23:22,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:23:22,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:23:22,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-19 04:23:22,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:23:22,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:23:22,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:23:22,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:23:22,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:23:22,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:23:22,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:23:22,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:23:22,155 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:23:22,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:23:22,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:23:22,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:23:22,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:23:22,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:23:22,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:23:22,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:23:22,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:23:22,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:23:22,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:23:22,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:23:22,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:23:22,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:23:22,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:23:22,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:23:22,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:23:22,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:23:22,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:23:22,160 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:23:22,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:23:22,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:23:22,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:23:22,163 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_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-19 04:23:22,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:23:22,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:23:22,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:23:22,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:23:22,486 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:23:22,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-19 04:23:22,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/bd15b5c8d/d1f65640b10a4e599d28d0c1c9822bc0/FLAG442a156a4 [2021-11-19 04:23:23,430 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:23:23,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-19 04:23:23,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/bd15b5c8d/d1f65640b10a4e599d28d0c1c9822bc0/FLAG442a156a4 [2021-11-19 04:23:23,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/bd15b5c8d/d1f65640b10a4e599d28d0c1c9822bc0 [2021-11-19 04:23:23,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:23:23,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:23:23,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:23:23,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:23:23,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:23:23,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:23:23" (1/1) ... [2021-11-19 04:23:23,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b168961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:23, skipping insertion in model container [2021-11-19 04:23:23,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:23:23" (1/1) ... [2021-11-19 04:23:23,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:23:24,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:23:24,571 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-19 04:23:24,572 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-19 04:23:24,745 WARN L230 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_51460012-5581-458e-bbcb-9b649a5aef2c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-19 04:23:25,167 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:23:25,195 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:23:25,279 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-19 04:23:25,280 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-19 04:23:25,289 WARN L230 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_51460012-5581-458e-bbcb-9b649a5aef2c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-19 04:23:25,441 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:23:25,549 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:23:25,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25 WrapperNode [2021-11-19 04:23:25,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:23:25,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:23:25,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:23:25,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:23:25,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,746 INFO L137 Inliner]: procedures = 139, calls = 823, calls flagged for inlining = 60, calls inlined = 49, statements flattened = 1703 [2021-11-19 04:23:25,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:23:25,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:23:25,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:23:25,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:23:25,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:23:25,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:23:25,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:23:25,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:23:25,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (1/1) ... [2021-11-19 04:23:25,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:23:25,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:23:25,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:23:25,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:23:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-19 04:23:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 04:23:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 04:23:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 04:23:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 04:23:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:23:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-19 04:23:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-19 04:23:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 04:23:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 04:23:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-19 04:23:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-19 04:23:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 04:23:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 04:23:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2021-11-19 04:23:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2021-11-19 04:23:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 04:23:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 04:23:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2021-11-19 04:23:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2021-11-19 04:23:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-19 04:23:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-19 04:23:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:23:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-19 04:23:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-19 04:23:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 04:23:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 04:23:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 04:23:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 04:23:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:23:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:23:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2021-11-19 04:23:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2021-11-19 04:23:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 04:23:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 04:23:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:23:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-19 04:23:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-19 04:23:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-19 04:23:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-19 04:23:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:23:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:23:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:23:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 04:23:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 04:23:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:23:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-19 04:23:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-19 04:23:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-19 04:23:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-19 04:23:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-19 04:23:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-19 04:23:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:23:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 04:23:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 04:23:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 04:23:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 04:23:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 04:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 04:23:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 04:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:23:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-19 04:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 04:23:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 04:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 04:23:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 04:23:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:23:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:23:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-19 04:23:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-19 04:23:26,441 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:23:26,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:23:26,790 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 04:23:28,687 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:23:28,711 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:23:28,711 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:23:28,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:23:28 BoogieIcfgContainer [2021-11-19 04:23:28,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:23:28,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:23:28,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:23:28,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:23:28,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:23:23" (1/3) ... [2021-11-19 04:23:28,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa3e125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:23:28, skipping insertion in model container [2021-11-19 04:23:28,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:23:25" (2/3) ... [2021-11-19 04:23:28,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa3e125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:23:28, skipping insertion in model container [2021-11-19 04:23:28,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:23:28" (3/3) ... [2021-11-19 04:23:28,727 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-19 04:23:28,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:23:28,738 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:23:28,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:23:28,804 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 [2021-11-19 04:23:28,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:23:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 317 states have (on average 1.4069400630914826) internal successors, (446), 325 states have internal predecessors, (446), 69 states have call successors, (69), 27 states have call predecessors, (69), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:23:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 04:23:28,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:28,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:23:28,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1306908120, now seen corresponding path program 1 times [2021-11-19 04:23:28,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:28,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313356307] [2021-11-19 04:23:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:28,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-19 04:23:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-19 04:23:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-19 04:23:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-19 04:23:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-19 04:23:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-19 04:23:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-19 04:23:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 04:23:29,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:29,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313356307] [2021-11-19 04:23:29,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313356307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:29,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:29,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:23:29,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3464334] [2021-11-19 04:23:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:29,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:23:29,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:23:29,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:23:29,872 INFO L87 Difference]: Start difference. First operand has 414 states, 317 states have (on average 1.4069400630914826) internal successors, (446), 325 states have internal predecessors, (446), 69 states have call successors, (69), 27 states have call predecessors, (69), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 04:23:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:30,833 INFO L93 Difference]: Finished difference Result 873 states and 1244 transitions. [2021-11-19 04:23:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:23:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 128 [2021-11-19 04:23:30,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:30,854 INFO L225 Difference]: With dead ends: 873 [2021-11-19 04:23:30,855 INFO L226 Difference]: Without dead ends: 437 [2021-11-19 04:23:30,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:23:30,868 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 208 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:30,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1316 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 04:23:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-19 04:23:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 421. [2021-11-19 04:23:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 327 states have (on average 1.3914373088685015) internal successors, (455), 330 states have internal predecessors, (455), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:23:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 588 transitions. [2021-11-19 04:23:30,966 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 588 transitions. Word has length 128 [2021-11-19 04:23:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:30,967 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 588 transitions. [2021-11-19 04:23:30,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 04:23:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 588 transitions. [2021-11-19 04:23:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 04:23:30,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:30,976 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:23:30,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:23:30,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 597728440, now seen corresponding path program 1 times [2021-11-19 04:23:30,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:30,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80469362] [2021-11-19 04:23:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:30,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-19 04:23:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 04:23:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-19 04:23:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:23:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 04:23:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-19 04:23:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:23:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:23:31,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:31,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80469362] [2021-11-19 04:23:31,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80469362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:31,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:31,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:23:31,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233082528] [2021-11-19 04:23:31,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:31,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:23:31,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:23:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:23:31,426 INFO L87 Difference]: Start difference. First operand 421 states and 588 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 04:23:33,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:23:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:33,847 INFO L93 Difference]: Finished difference Result 876 states and 1235 transitions. [2021-11-19 04:23:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:23:33,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 159 [2021-11-19 04:23:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:33,857 INFO L225 Difference]: With dead ends: 876 [2021-11-19 04:23:33,857 INFO L226 Difference]: Without dead ends: 458 [2021-11-19 04:23:33,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:23:33,862 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 714 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:33,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 977 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 04:23:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-19 04:23:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 421. [2021-11-19 04:23:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 327 states have (on average 1.3669724770642202) internal successors, (447), 330 states have internal predecessors, (447), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:23:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 580 transitions. [2021-11-19 04:23:33,940 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 580 transitions. Word has length 159 [2021-11-19 04:23:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:33,942 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 580 transitions. [2021-11-19 04:23:33,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 04:23:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 580 transitions. [2021-11-19 04:23:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 04:23:33,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:33,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:23:33,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:23:33,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 894777355, now seen corresponding path program 1 times [2021-11-19 04:23:33,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:33,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019963420] [2021-11-19 04:23:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:33,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:23:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-19 04:23:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-19 04:23:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 04:23:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 04:23:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 04:23:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-19 04:23:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:23:34,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:34,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019963420] [2021-11-19 04:23:34,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019963420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:34,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:34,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:23:34,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65272051] [2021-11-19 04:23:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:34,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:23:34,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:23:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:23:34,299 INFO L87 Difference]: Start difference. First operand 421 states and 580 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 04:23:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:36,332 INFO L93 Difference]: Finished difference Result 877 states and 1218 transitions. [2021-11-19 04:23:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:23:36,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 163 [2021-11-19 04:23:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:36,338 INFO L225 Difference]: With dead ends: 877 [2021-11-19 04:23:36,339 INFO L226 Difference]: Without dead ends: 458 [2021-11-19 04:23:36,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:36,342 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 244 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:36,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1427 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 04:23:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-19 04:23:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 421. [2021-11-19 04:23:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 327 states have (on average 1.363914373088685) internal successors, (446), 330 states have internal predecessors, (446), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:23:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 579 transitions. [2021-11-19 04:23:36,404 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 579 transitions. Word has length 163 [2021-11-19 04:23:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:36,405 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 579 transitions. [2021-11-19 04:23:36,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 04:23:36,405 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 579 transitions. [2021-11-19 04:23:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 04:23:36,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:36,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:23:36,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:23:36,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1727372664, now seen corresponding path program 1 times [2021-11-19 04:23:36,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:36,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476630344] [2021-11-19 04:23:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:36,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-19 04:23:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 04:23:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-19 04:23:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:23:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 04:23:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-19 04:23:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:23:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:23:36,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:36,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476630344] [2021-11-19 04:23:36,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476630344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:36,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:36,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:23:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450796240] [2021-11-19 04:23:36,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:36,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:23:36,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:36,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:23:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:23:36,802 INFO L87 Difference]: Start difference. First operand 421 states and 579 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 04:23:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:39,067 INFO L93 Difference]: Finished difference Result 878 states and 1217 transitions. [2021-11-19 04:23:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:23:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 159 [2021-11-19 04:23:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:39,072 INFO L225 Difference]: With dead ends: 878 [2021-11-19 04:23:39,072 INFO L226 Difference]: Without dead ends: 456 [2021-11-19 04:23:39,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:23:39,076 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 247 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:39,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2272 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 04:23:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-19 04:23:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 419. [2021-11-19 04:23:39,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 325 states have (on average 1.363076923076923) internal successors, (443), 328 states have internal predecessors, (443), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:23:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 576 transitions. [2021-11-19 04:23:39,108 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 576 transitions. Word has length 159 [2021-11-19 04:23:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:39,110 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 576 transitions. [2021-11-19 04:23:39,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 04:23:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 576 transitions. [2021-11-19 04:23:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 04:23:39,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:39,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:23:39,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:23:39,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash 699615025, now seen corresponding path program 1 times [2021-11-19 04:23:39,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:39,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112766738] [2021-11-19 04:23:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:39,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:23:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-19 04:23:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-19 04:23:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 04:23:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 04:23:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 04:23:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-19 04:23:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:23:39,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:39,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112766738] [2021-11-19 04:23:39,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112766738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:39,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:39,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:23:39,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647269585] [2021-11-19 04:23:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:39,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:23:39,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:23:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:39,398 INFO L87 Difference]: Start difference. First operand 419 states and 576 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 04:23:42,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:23:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:43,076 INFO L93 Difference]: Finished difference Result 917 states and 1271 transitions. [2021-11-19 04:23:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:23:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 163 [2021-11-19 04:23:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:43,082 INFO L225 Difference]: With dead ends: 917 [2021-11-19 04:23:43,082 INFO L226 Difference]: Without dead ends: 501 [2021-11-19 04:23:43,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:23:43,086 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 405 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:43,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1710 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 04:23:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-19 04:23:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 461. [2021-11-19 04:23:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 363 states have (on average 1.3608815426997245) internal successors, (494), 366 states have internal predecessors, (494), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:23:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 629 transitions. [2021-11-19 04:23:43,119 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 629 transitions. Word has length 163 [2021-11-19 04:23:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:43,120 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 629 transitions. [2021-11-19 04:23:43,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 04:23:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 629 transitions. [2021-11-19 04:23:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-19 04:23:43,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:43,125 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-11-19 04:23:43,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:23:43,125 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1621668190, now seen corresponding path program 1 times [2021-11-19 04:23:43,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:43,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239066255] [2021-11-19 04:23:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:43,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 04:23:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 04:23:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-19 04:23:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-19 04:23:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:23:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-19 04:23:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-19 04:23:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 04:23:43,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:43,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239066255] [2021-11-19 04:23:43,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239066255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:43,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:43,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:23:43,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505021096] [2021-11-19 04:23:43,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:43,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:23:43,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:23:43,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:43,362 INFO L87 Difference]: Start difference. First operand 461 states and 629 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 04:23:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:46,701 INFO L93 Difference]: Finished difference Result 1069 states and 1482 transitions. [2021-11-19 04:23:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:23:46,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 181 [2021-11-19 04:23:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:46,708 INFO L225 Difference]: With dead ends: 1069 [2021-11-19 04:23:46,708 INFO L226 Difference]: Without dead ends: 611 [2021-11-19 04:23:46,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:23:46,712 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 406 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:46,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1900 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 04:23:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-19 04:23:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 462. [2021-11-19 04:23:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 364 states have (on average 1.35989010989011) internal successors, (495), 367 states have internal predecessors, (495), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:23:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 630 transitions. [2021-11-19 04:23:46,748 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 630 transitions. Word has length 181 [2021-11-19 04:23:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:46,748 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 630 transitions. [2021-11-19 04:23:46,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 04:23:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 630 transitions. [2021-11-19 04:23:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-19 04:23:46,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:46,753 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-11-19 04:23:46,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:23:46,754 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1433568862, now seen corresponding path program 1 times [2021-11-19 04:23:46,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:46,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343356550] [2021-11-19 04:23:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:46,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 04:23:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 04:23:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-19 04:23:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-19 04:23:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:23:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-19 04:23:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-19 04:23:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 04:23:47,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:47,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343356550] [2021-11-19 04:23:47,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343356550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:47,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:47,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:23:47,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019830972] [2021-11-19 04:23:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:47,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:23:47,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:23:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:23:47,050 INFO L87 Difference]: Start difference. First operand 462 states and 630 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 04:23:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:50,050 INFO L93 Difference]: Finished difference Result 962 states and 1325 transitions. [2021-11-19 04:23:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:23:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 181 [2021-11-19 04:23:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:50,055 INFO L225 Difference]: With dead ends: 962 [2021-11-19 04:23:50,055 INFO L226 Difference]: Without dead ends: 503 [2021-11-19 04:23:50,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:23:50,060 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 335 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:50,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2088 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 04:23:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-11-19 04:23:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 464. [2021-11-19 04:23:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 366 states have (on average 1.3579234972677596) internal successors, (497), 369 states have internal predecessors, (497), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:23:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 632 transitions. [2021-11-19 04:23:50,097 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 632 transitions. Word has length 181 [2021-11-19 04:23:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:50,098 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 632 transitions. [2021-11-19 04:23:50,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 04:23:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 632 transitions. [2021-11-19 04:23:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 04:23:50,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:50,104 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:50,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:23:50,104 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 561427367, now seen corresponding path program 1 times [2021-11-19 04:23:50,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:50,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312775796] [2021-11-19 04:23:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:50,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-19 04:23:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-19 04:23:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 04:23:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-19 04:23:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-19 04:23:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:23:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-19 04:23:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-19 04:23:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 04:23:50,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:50,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312775796] [2021-11-19 04:23:50,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312775796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:50,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:50,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:23:50,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861194541] [2021-11-19 04:23:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:50,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:23:50,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:23:50,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:50,475 INFO L87 Difference]: Start difference. First operand 464 states and 632 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:23:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:53,351 INFO L93 Difference]: Finished difference Result 963 states and 1325 transitions. [2021-11-19 04:23:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:23:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 199 [2021-11-19 04:23:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:53,357 INFO L225 Difference]: With dead ends: 963 [2021-11-19 04:23:53,357 INFO L226 Difference]: Without dead ends: 502 [2021-11-19 04:23:53,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:23:53,361 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 332 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:53,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1652 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 04:23:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-19 04:23:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 465. [2021-11-19 04:23:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 367 states have (on average 1.3569482288828338) internal successors, (498), 370 states have internal predecessors, (498), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:23:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 633 transitions. [2021-11-19 04:23:53,393 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 633 transitions. Word has length 199 [2021-11-19 04:23:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:53,394 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 633 transitions. [2021-11-19 04:23:53,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:23:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 633 transitions. [2021-11-19 04:23:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 04:23:53,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:53,400 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:53,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:23:53,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -575950549, now seen corresponding path program 1 times [2021-11-19 04:23:53,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:53,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207616498] [2021-11-19 04:23:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:53,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-19 04:23:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-19 04:23:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 04:23:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-19 04:23:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-19 04:23:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:23:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-19 04:23:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-19 04:23:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 04:23:53,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:53,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207616498] [2021-11-19 04:23:53,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207616498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:53,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:53,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:23:53,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896917097] [2021-11-19 04:23:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:53,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:23:53,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:23:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:53,730 INFO L87 Difference]: Start difference. First operand 465 states and 633 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:23:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:56,567 INFO L93 Difference]: Finished difference Result 978 states and 1351 transitions. [2021-11-19 04:23:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:23:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 199 [2021-11-19 04:23:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:56,572 INFO L225 Difference]: With dead ends: 978 [2021-11-19 04:23:56,573 INFO L226 Difference]: Without dead ends: 516 [2021-11-19 04:23:56,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:23:56,576 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 349 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:56,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1678 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 04:23:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-19 04:23:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 466. [2021-11-19 04:23:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 368 states have (on average 1.3559782608695652) internal successors, (499), 371 states have internal predecessors, (499), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:23:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 634 transitions. [2021-11-19 04:23:56,608 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 634 transitions. Word has length 199 [2021-11-19 04:23:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:56,609 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 634 transitions. [2021-11-19 04:23:56,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:23:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 634 transitions. [2021-11-19 04:23:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-19 04:23:56,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:56,614 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:56,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:23:56,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1655729045, now seen corresponding path program 1 times [2021-11-19 04:23:56,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:56,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839221057] [2021-11-19 04:23:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:56,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 04:23:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 04:23:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-19 04:23:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-19 04:23:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:23:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-19 04:23:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-19 04:23:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-19 04:23:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-19 04:23:56,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:56,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839221057] [2021-11-19 04:23:56,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839221057] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:23:56,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296152412] [2021-11-19 04:23:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:56,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:23:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:23:56,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:23:57,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:23:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:57,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:23:57,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 04:23:57,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:23:57,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296152412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:57,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:23:57,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-19 04:23:57,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486151130] [2021-11-19 04:23:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:57,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:23:57,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:23:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:23:57,877 INFO L87 Difference]: Start difference. First operand 466 states and 634 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:23:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:57,913 INFO L93 Difference]: Finished difference Result 937 states and 1284 transitions. [2021-11-19 04:23:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:23:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 207 [2021-11-19 04:23:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:57,919 INFO L225 Difference]: With dead ends: 937 [2021-11-19 04:23:57,919 INFO L226 Difference]: Without dead ends: 474 [2021-11-19 04:23:57,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:23:57,923 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 3 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:57,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1084 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:23:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-19 04:23:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 472. [2021-11-19 04:23:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 374 states have (on average 1.3556149732620322) internal successors, (507), 377 states have internal predecessors, (507), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:23:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 642 transitions. [2021-11-19 04:23:57,950 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 642 transitions. Word has length 207 [2021-11-19 04:23:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:57,951 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 642 transitions. [2021-11-19 04:23:57,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:23:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 642 transitions. [2021-11-19 04:23:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 04:23:57,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:57,957 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:57,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:58,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:23:58,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:23:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash -216059247, now seen corresponding path program 1 times [2021-11-19 04:23:58,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:23:58,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357004059] [2021-11-19 04:23:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:58,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:23:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:23:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:23:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:23:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 04:23:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 04:23:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-19 04:23:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-19 04:23:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:23:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-19 04:23:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-19 04:23:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:23:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:23:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:23:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-19 04:23:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-19 04:23:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-19 04:23:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 04:23:58,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:23:58,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357004059] [2021-11-19 04:23:58,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357004059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:58,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:58,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:23:58,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901552523] [2021-11-19 04:23:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:58,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:23:58,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:23:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:23:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:23:58,485 INFO L87 Difference]: Start difference. First operand 472 states and 642 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 04:24:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:01,251 INFO L93 Difference]: Finished difference Result 975 states and 1337 transitions. [2021-11-19 04:24:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:24:01,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 221 [2021-11-19 04:24:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:01,256 INFO L225 Difference]: With dead ends: 975 [2021-11-19 04:24:01,256 INFO L226 Difference]: Without dead ends: 506 [2021-11-19 04:24:01,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:24:01,260 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 333 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:01,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2091 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 04:24:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-19 04:24:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 472. [2021-11-19 04:24:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 374 states have (on average 1.3556149732620322) internal successors, (507), 377 states have internal predecessors, (507), 68 states have call successors, (68), 30 states have call predecessors, (68), 29 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-19 04:24:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 642 transitions. [2021-11-19 04:24:01,288 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 642 transitions. Word has length 221 [2021-11-19 04:24:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:01,289 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 642 transitions. [2021-11-19 04:24:01,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 04:24:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 642 transitions. [2021-11-19 04:24:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 04:24:01,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:01,295 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:01,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 04:24:01,295 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1981089616, now seen corresponding path program 1 times [2021-11-19 04:24:01,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:01,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167835487] [2021-11-19 04:24:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:01,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-19 04:24:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-19 04:24:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-19 04:24:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-19 04:24:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-19 04:24:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-19 04:24:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-19 04:24:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-19 04:24:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-19 04:24:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-19 04:24:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 04:24:01,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:01,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167835487] [2021-11-19 04:24:01,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167835487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:01,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824688338] [2021-11-19 04:24:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:01,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:01,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:01,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:01,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:24:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:02,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:24:02,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 04:24:02,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 04:24:03,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824688338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:24:03,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:24:03,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-11-19 04:24:03,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563382027] [2021-11-19 04:24:03,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:24:03,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:24:03,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:24:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:24:03,073 INFO L87 Difference]: Start difference. First operand 472 states and 642 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 7 states have internal predecessors, (138), 5 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-19 04:24:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:05,600 INFO L93 Difference]: Finished difference Result 1026 states and 1424 transitions. [2021-11-19 04:24:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:24:05,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 7 states have internal predecessors, (138), 5 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 221 [2021-11-19 04:24:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:05,605 INFO L225 Difference]: With dead ends: 1026 [2021-11-19 04:24:05,606 INFO L226 Difference]: Without dead ends: 557 [2021-11-19 04:24:05,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:24:05,610 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 396 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:05,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 3028 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 04:24:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-19 04:24:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 511. [2021-11-19 04:24:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 407 states have (on average 1.3513513513513513) internal successors, (550), 412 states have internal predecessors, (550), 74 states have call successors, (74), 30 states have call predecessors, (74), 29 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-19 04:24:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 697 transitions. [2021-11-19 04:24:05,644 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 697 transitions. Word has length 221 [2021-11-19 04:24:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:05,645 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 697 transitions. [2021-11-19 04:24:05,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 7 states have internal predecessors, (138), 5 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-19 04:24:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 697 transitions. [2021-11-19 04:24:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-19 04:24:05,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:05,652 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:05,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:05,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-19 04:24:05,868 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash 530036876, now seen corresponding path program 1 times [2021-11-19 04:24:05,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:05,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380103771] [2021-11-19 04:24:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:05,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-19 04:24:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-19 04:24:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-19 04:24:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-19 04:24:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-19 04:24:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-19 04:24:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-19 04:24:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-19 04:24:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-19 04:24:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-19 04:24:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 04:24:06,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:06,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380103771] [2021-11-19 04:24:06,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380103771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:06,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457050065] [2021-11-19 04:24:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:06,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:06,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:06,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:06,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:24:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:06,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:24:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 04:24:07,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 04:24:07,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457050065] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:24:07,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:24:07,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 11 [2021-11-19 04:24:07,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101611880] [2021-11-19 04:24:07,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:24:07,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 04:24:07,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 04:24:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:24:07,567 INFO L87 Difference]: Start difference. First operand 511 states and 697 transitions. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 04:24:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:10,420 INFO L93 Difference]: Finished difference Result 1084 states and 1504 transitions. [2021-11-19 04:24:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:24:10,421 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 230 [2021-11-19 04:24:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:10,430 INFO L225 Difference]: With dead ends: 1084 [2021-11-19 04:24:10,430 INFO L226 Difference]: Without dead ends: 576 [2021-11-19 04:24:10,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-19 04:24:10,435 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 436 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:10,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2167 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 04:24:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-19 04:24:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 525. [2021-11-19 04:24:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 419 states have (on average 1.3508353221957041) internal successors, (566), 425 states have internal predecessors, (566), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-19 04:24:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 717 transitions. [2021-11-19 04:24:10,467 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 717 transitions. Word has length 230 [2021-11-19 04:24:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:10,468 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 717 transitions. [2021-11-19 04:24:10,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 04:24:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 717 transitions. [2021-11-19 04:24:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-19 04:24:10,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:10,475 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:10,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:10,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:10,691 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:10,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash 3784372, now seen corresponding path program 1 times [2021-11-19 04:24:10,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:10,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859292903] [2021-11-19 04:24:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:10,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 04:24:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 04:24:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-19 04:24:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 04:24:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-19 04:24:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-19 04:24:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-19 04:24:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-19 04:24:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-19 04:24:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-19 04:24:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 04:24:11,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:11,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859292903] [2021-11-19 04:24:11,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859292903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:11,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:11,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:24:11,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836065098] [2021-11-19 04:24:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:11,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:24:11,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:24:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:24:11,049 INFO L87 Difference]: Start difference. First operand 525 states and 717 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 04:24:13,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:13,763 INFO L93 Difference]: Finished difference Result 1082 states and 1490 transitions. [2021-11-19 04:24:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:24:13,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 238 [2021-11-19 04:24:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:13,768 INFO L225 Difference]: With dead ends: 1082 [2021-11-19 04:24:13,768 INFO L226 Difference]: Without dead ends: 560 [2021-11-19 04:24:13,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:24:13,771 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 331 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:13,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1661 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 04:24:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-19 04:24:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 527. [2021-11-19 04:24:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 421 states have (on average 1.3491686460807601) internal successors, (568), 427 states have internal predecessors, (568), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-19 04:24:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 719 transitions. [2021-11-19 04:24:13,804 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 719 transitions. Word has length 238 [2021-11-19 04:24:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:13,804 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 719 transitions. [2021-11-19 04:24:13,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 04:24:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 719 transitions. [2021-11-19 04:24:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-19 04:24:13,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:13,809 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:13,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 04:24:13,810 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1522985041, now seen corresponding path program 1 times [2021-11-19 04:24:13,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:13,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742777220] [2021-11-19 04:24:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:13,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:24:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-19 04:24:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-19 04:24:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-19 04:24:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-19 04:24:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-19 04:24:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-19 04:24:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-19 04:24:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-11-19 04:24:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-19 04:24:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:14,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:14,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742777220] [2021-11-19 04:24:14,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742777220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:14,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676346646] [2021-11-19 04:24:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:14,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:14,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:14,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:14,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:24:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:24:14,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-19 04:24:15,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:24:15,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676346646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:15,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:24:15,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-19 04:24:15,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269771259] [2021-11-19 04:24:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:15,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:24:15,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:24:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:24:15,232 INFO L87 Difference]: Start difference. First operand 527 states and 719 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 04:24:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:15,289 INFO L93 Difference]: Finished difference Result 1054 states and 1442 transitions. [2021-11-19 04:24:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:24:15,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 239 [2021-11-19 04:24:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:15,297 INFO L225 Difference]: With dead ends: 1054 [2021-11-19 04:24:15,298 INFO L226 Difference]: Without dead ends: 530 [2021-11-19 04:24:15,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:24:15,306 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 2 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:15,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1089 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:24:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-19 04:24:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2021-11-19 04:24:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 422 states have (on average 1.3483412322274881) internal successors, (569), 428 states have internal predecessors, (569), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-19 04:24:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 720 transitions. [2021-11-19 04:24:15,376 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 720 transitions. Word has length 239 [2021-11-19 04:24:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:15,377 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 720 transitions. [2021-11-19 04:24:15,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 04:24:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 720 transitions. [2021-11-19 04:24:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-19 04:24:15,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:15,382 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:15,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:15,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-19 04:24:15,599 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash 355617593, now seen corresponding path program 1 times [2021-11-19 04:24:15,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:15,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735712962] [2021-11-19 04:24:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:15,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-19 04:24:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 04:24:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-19 04:24:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-19 04:24:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-19 04:24:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-19 04:24:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-19 04:24:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-19 04:24:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-19 04:24:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-19 04:24:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 04:24:15,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:15,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735712962] [2021-11-19 04:24:15,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735712962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:15,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11929885] [2021-11-19 04:24:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:15,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:15,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:15,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:24:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:16,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 04:24:16,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-19 04:24:16,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:24:16,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11929885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:16,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:24:16,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-19 04:24:16,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39412117] [2021-11-19 04:24:16,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:16,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:24:16,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:24:16,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:24:16,909 INFO L87 Difference]: Start difference. First operand 528 states and 720 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 04:24:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:16,984 INFO L93 Difference]: Finished difference Result 1057 states and 1445 transitions. [2021-11-19 04:24:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:24:16,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 240 [2021-11-19 04:24:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:16,989 INFO L225 Difference]: With dead ends: 1057 [2021-11-19 04:24:16,989 INFO L226 Difference]: Without dead ends: 532 [2021-11-19 04:24:16,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:24:16,993 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 5 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:16,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1627 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:24:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-19 04:24:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2021-11-19 04:24:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 424 states have (on average 1.346698113207547) internal successors, (571), 430 states have internal predecessors, (571), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-19 04:24:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 722 transitions. [2021-11-19 04:24:17,029 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 722 transitions. Word has length 240 [2021-11-19 04:24:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:17,029 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 722 transitions. [2021-11-19 04:24:17,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 04:24:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 722 transitions. [2021-11-19 04:24:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-19 04:24:17,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:17,035 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:17,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:17,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-19 04:24:17,251 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1853302949, now seen corresponding path program 1 times [2021-11-19 04:24:17,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:17,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420411018] [2021-11-19 04:24:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:17,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:24:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-19 04:24:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-19 04:24:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-19 04:24:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-19 04:24:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-19 04:24:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-19 04:24:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-19 04:24:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-19 04:24:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-19 04:24:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:17,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:17,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420411018] [2021-11-19 04:24:17,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420411018] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:17,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448576109] [2021-11-19 04:24:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:17,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:17,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:17,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 04:24:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:18,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:24:18,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:18,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:19,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448576109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:24:19,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:24:19,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-11-19 04:24:19,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980769031] [2021-11-19 04:24:19,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:24:19,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:24:19,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:24:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:24:19,446 INFO L87 Difference]: Start difference. First operand 530 states and 722 transitions. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (41), 5 states have call predecessors, (41), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 04:24:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:22,548 INFO L93 Difference]: Finished difference Result 1096 states and 1506 transitions. [2021-11-19 04:24:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:24:22,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (41), 5 states have call predecessors, (41), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 242 [2021-11-19 04:24:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:22,553 INFO L225 Difference]: With dead ends: 1096 [2021-11-19 04:24:22,553 INFO L226 Difference]: Without dead ends: 569 [2021-11-19 04:24:22,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:24:22,557 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 334 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:22,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2520 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 04:24:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-19 04:24:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 536. [2021-11-19 04:24:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 430 states have (on average 1.341860465116279) internal successors, (577), 436 states have internal predecessors, (577), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-19 04:24:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 728 transitions. [2021-11-19 04:24:22,589 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 728 transitions. Word has length 242 [2021-11-19 04:24:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:22,589 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 728 transitions. [2021-11-19 04:24:22,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (41), 5 states have call predecessors, (41), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 04:24:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 728 transitions. [2021-11-19 04:24:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-19 04:24:22,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:22,594 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:22,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:22,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-19 04:24:22,811 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1958183055, now seen corresponding path program 1 times [2021-11-19 04:24:22,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:22,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89927542] [2021-11-19 04:24:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:22,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-19 04:24:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-19 04:24:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-19 04:24:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-19 04:24:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-19 04:24:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 04:24:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-19 04:24:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-11-19 04:24:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-19 04:24:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-19 04:24:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:23,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:23,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89927542] [2021-11-19 04:24:23,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89927542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:23,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732728023] [2021-11-19 04:24:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:23,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:23,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:23,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 04:24:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:24,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 04:24:24,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:24,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 04:24:25,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732728023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:24:25,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:24:25,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2021-11-19 04:24:25,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353640055] [2021-11-19 04:24:25,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:24:25,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 04:24:25,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 04:24:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:24:25,342 INFO L87 Difference]: Start difference. First operand 536 states and 728 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 13 states have internal predecessors, (162), 2 states have call successors, (41), 5 states have call predecessors, (41), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 04:24:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:28,492 INFO L93 Difference]: Finished difference Result 1114 states and 1527 transitions. [2021-11-19 04:24:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:24:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 13 states have internal predecessors, (162), 2 states have call successors, (41), 5 states have call predecessors, (41), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 245 [2021-11-19 04:24:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:28,498 INFO L225 Difference]: With dead ends: 1114 [2021-11-19 04:24:28,498 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 04:24:28,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2021-11-19 04:24:28,502 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 340 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:28,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 3828 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 04:24:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 04:24:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 548. [2021-11-19 04:24:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 442 states have (on average 1.332579185520362) internal successors, (589), 448 states have internal predecessors, (589), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-19 04:24:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 740 transitions. [2021-11-19 04:24:28,566 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 740 transitions. Word has length 245 [2021-11-19 04:24:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:28,567 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 740 transitions. [2021-11-19 04:24:28,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 13 states have internal predecessors, (162), 2 states have call successors, (41), 5 states have call predecessors, (41), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 04:24:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 740 transitions. [2021-11-19 04:24:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-19 04:24:28,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:28,574 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:28,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:28,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-19 04:24:28,791 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:24:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1439036614, now seen corresponding path program 1 times [2021-11-19 04:24:28,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:24:28,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635068853] [2021-11-19 04:24:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:28,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:24:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:24:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-19 04:24:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 04:24:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-19 04:24:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 04:24:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-19 04:24:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-19 04:24:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-19 04:24:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-19 04:24:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-19 04:24:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:24:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-19 04:24:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 04:24:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-19 04:24:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-19 04:24:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-19 04:24:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 04:24:29,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:24:29,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635068853] [2021-11-19 04:24:29,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635068853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:24:29,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974185393] [2021-11-19 04:24:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:29,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:29,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:24:29,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:24:29,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 04:24:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:46,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-19 04:24:46,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:46,437 INFO L354 Elim1Store]: treesize reduction 978, result has 4.5 percent of original size [2021-11-19 04:24:46,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 14 case distinctions, treesize of input 145 treesize of output 156 [2021-11-19 04:24:51,602 INFO L354 Elim1Store]: treesize reduction 540, result has 14.4 percent of original size [2021-11-19 04:24:51,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 158 treesize of output 225 [2021-11-19 04:24:58,857 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 04:24:58,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 04:24:58,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:24:58,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-19 04:24:58,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673126242] [2021-11-19 04:24:58,859 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 04:24:58,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 04:24:58,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:24:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 04:24:58,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:24:58,861 INFO L87 Difference]: Start difference. First operand 548 states and 740 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 13 states have internal predecessors, (138), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 04:24:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:24:58,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:24:58,862 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:58,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:24:58,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 04:24:58,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:59,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:24:59,064 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@14ba9220 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 04:24:59,068 INFO L158 Benchmark]: Toolchain (without parser) took 95128.19ms. Allocated memory was 94.4MB in the beginning and 323.0MB in the end (delta: 228.6MB). Free memory was 67.3MB in the beginning and 81.6MB in the end (delta: -14.3MB). Peak memory consumption was 214.1MB. Max. memory is 16.1GB. [2021-11-19 04:24:59,068 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:24:59,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1609.24ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 67.1MB in the beginning and 88.8MB in the end (delta: -21.7MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2021-11-19 04:24:59,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 195.39ms. Allocated memory is still 130.0MB. Free memory was 88.8MB in the beginning and 78.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:24:59,072 INFO L158 Benchmark]: Boogie Preprocessor took 166.60ms. Allocated memory is still 130.0MB. Free memory was 78.3MB in the beginning and 68.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:24:59,073 INFO L158 Benchmark]: RCFGBuilder took 2799.80ms. Allocated memory was 130.0MB in the beginning and 222.3MB in the end (delta: 92.3MB). Free memory was 68.5MB in the beginning and 147.0MB in the end (delta: -78.6MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2021-11-19 04:24:59,079 INFO L158 Benchmark]: TraceAbstraction took 90351.11ms. Allocated memory was 222.3MB in the beginning and 323.0MB in the end (delta: 100.7MB). Free memory was 147.0MB in the beginning and 81.6MB in the end (delta: 65.4MB). Peak memory consumption was 166.1MB. Max. memory is 16.1GB. [2021-11-19 04:24:59,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1609.24ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 67.1MB in the beginning and 88.8MB in the end (delta: -21.7MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 195.39ms. Allocated memory is still 130.0MB. Free memory was 88.8MB in the beginning and 78.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 166.60ms. Allocated memory is still 130.0MB. Free memory was 78.3MB in the beginning and 68.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2799.80ms. Allocated memory was 130.0MB in the beginning and 222.3MB in the end (delta: 92.3MB). Free memory was 68.5MB in the beginning and 147.0MB in the end (delta: -78.6MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * TraceAbstraction took 90351.11ms. Allocated memory was 222.3MB in the beginning and 323.0MB in the end (delta: 100.7MB). Free memory was 147.0MB in the beginning and 81.6MB in the end (delta: 65.4MB). Peak memory consumption was 166.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@14ba9220 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@14ba9220: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL --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 b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:25:01,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:25:01,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:25:01,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:25:01,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:25:01,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:25:01,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:25:01,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:25:01,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:25:01,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:25:01,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:25:01,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:25:01,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:25:01,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:25:01,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:25:01,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:25:01,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:25:01,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:25:01,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:25:01,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:25:01,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:25:01,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:25:01,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:25:01,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:25:01,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:25:01,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:25:01,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:25:01,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:25:01,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:25:01,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:25:01,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:25:01,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:25:01,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:25:01,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:25:01,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:25:01,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:25:01,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:25:01,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:25:01,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:25:01,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:25:01,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:25:01,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-19 04:25:01,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:25:01,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:25:01,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:25:01,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:25:01,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:25:01,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:25:01,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:25:01,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:25:01,412 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:25:01,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:25:01,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:25:01,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:25:01,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:25:01,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:25:01,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:25:01,414 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:25:01,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:25:01,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:25:01,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:25:01,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:25:01,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:25:01,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:25:01,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:25:01,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:25:01,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:25:01,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:25:01,417 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:25:01,417 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:25:01,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:25:01,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:25:01,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:25:01,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:25:01,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:25:01,419 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-19 04:25:01,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:25:01,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:25:01,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:25:01,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:25:01,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:25:01,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-19 04:25:01,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/47412a29e/745c60de4cde421cb0ed0a594bd92ceb/FLAGd91ca0dcf [2021-11-19 04:25:02,742 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:25:02,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-19 04:25:02,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/47412a29e/745c60de4cde421cb0ed0a594bd92ceb/FLAGd91ca0dcf [2021-11-19 04:25:02,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/data/47412a29e/745c60de4cde421cb0ed0a594bd92ceb [2021-11-19 04:25:02,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:25:02,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:25:02,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:25:02,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:25:02,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:25:02,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:25:02" (1/1) ... [2021-11-19 04:25:02,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7165e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:02, skipping insertion in model container [2021-11-19 04:25:02,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:25:02" (1/1) ... [2021-11-19 04:25:02,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:25:02,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:25:03,551 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-19 04:25:03,551 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-19 04:25:03,791 WARN L230 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_51460012-5581-458e-bbcb-9b649a5aef2c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-19 04:25:04,244 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:25:04,288 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:25:04,418 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-19 04:25:04,419 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-19 04:25:04,438 WARN L230 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_51460012-5581-458e-bbcb-9b649a5aef2c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-19 04:25:04,638 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:25:04,749 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:25:04,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04 WrapperNode [2021-11-19 04:25:04,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:25:04,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:25:04,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:25:04,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:25:04,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:04,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:04,970 INFO L137 Inliner]: procedures = 154, calls = 823, calls flagged for inlining = 60, calls inlined = 49, statements flattened = 1660 [2021-11-19 04:25:04,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:25:04,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:25:04,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:25:04,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:25:04,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:04,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:25:05,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:25:05,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:25:05,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:25:05,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (1/1) ... [2021-11-19 04:25:05,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:25:05,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:25:05,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:25:05,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:25:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:25:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 04:25:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:25:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 04:25:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 04:25:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 04:25:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 04:25:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 04:25:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-19 04:25:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-19 04:25:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 04:25:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 04:25:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-19 04:25:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-19 04:25:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 04:25:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 04:25:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2021-11-19 04:25:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2021-11-19 04:25:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 04:25:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 04:25:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2021-11-19 04:25:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2021-11-19 04:25:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-19 04:25:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-19 04:25:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-19 04:25:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-19 04:25:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 04:25:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 04:25:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 04:25:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 04:25:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 04:25:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 04:25:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 04:25:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 04:25:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:25:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:25:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2021-11-19 04:25:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2021-11-19 04:25:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 04:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 04:25:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:25:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-19 04:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-19 04:25:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-19 04:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-19 04:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 04:25:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 04:25:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 04:25:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:25:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 04:25:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-19 04:25:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-19 04:25:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 04:25:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-19 04:25:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-19 04:25:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-19 04:25:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-19 04:25:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:25:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 04:25:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 04:25:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 04:25:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 04:25:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 04:25:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:25:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 04:25:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:25:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:25:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 04:25:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 04:25:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 04:25:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 04:25:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:25:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 04:25:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 04:25:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 04:25:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 04:25:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 04:25:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 04:25:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 04:25:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:25:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:25:05,290 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-19 04:25:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-19 04:25:05,763 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:25:05,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:25:05,954 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 04:25:15,955 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:25:15,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:25:15,969 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:25:15,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:25:15 BoogieIcfgContainer [2021-11-19 04:25:15,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:25:15,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:25:15,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:25:15,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:25:15,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:25:02" (1/3) ... [2021-11-19 04:25:15,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5e68c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:25:15, skipping insertion in model container [2021-11-19 04:25:15,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:25:04" (2/3) ... [2021-11-19 04:25:15,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5e68c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:25:15, skipping insertion in model container [2021-11-19 04:25:15,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:25:15" (3/3) ... [2021-11-19 04:25:15,981 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-19 04:25:15,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:25:15,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:25:16,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:25:16,048 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 [2021-11-19 04:25:16,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:25:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 317 states have (on average 1.4069400630914826) internal successors, (446), 325 states have internal predecessors, (446), 69 states have call successors, (69), 27 states have call predecessors, (69), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:25:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 04:25:16,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:16,101 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:25:16,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1708242654, now seen corresponding path program 1 times [2021-11-19 04:25:16,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:16,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955936581] [2021-11-19 04:25:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:16,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:16,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:16,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:16,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:25:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:16,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:25:16,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 04:25:17,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 04:25:17,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:17,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955936581] [2021-11-19 04:25:17,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955936581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:17,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:25:17,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735734062] [2021-11-19 04:25:17,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:17,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:25:17,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:25:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:25:18,018 INFO L87 Difference]: Start difference. First operand has 414 states, 317 states have (on average 1.4069400630914826) internal successors, (446), 325 states have internal predecessors, (446), 69 states have call successors, (69), 27 states have call predecessors, (69), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:25:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:18,164 INFO L93 Difference]: Finished difference Result 823 states and 1170 transitions. [2021-11-19 04:25:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:25:18,167 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 128 [2021-11-19 04:25:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:18,192 INFO L225 Difference]: With dead ends: 823 [2021-11-19 04:25:18,192 INFO L226 Difference]: Without dead ends: 398 [2021-11-19 04:25:18,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:25:18,208 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:18,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:25:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-19 04:25:18,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-11-19 04:25:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 306 states have (on average 1.3888888888888888) internal successors, (425), 309 states have internal predecessors, (425), 66 states have call successors, (66), 26 states have call predecessors, (66), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-19 04:25:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 556 transitions. [2021-11-19 04:25:18,327 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 556 transitions. Word has length 128 [2021-11-19 04:25:18,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:18,328 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 556 transitions. [2021-11-19 04:25:18,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:25:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 556 transitions. [2021-11-19 04:25:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 04:25:18,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:18,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:25:18,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:18,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:18,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1349293573, now seen corresponding path program 1 times [2021-11-19 04:25:18,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:18,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892800612] [2021-11-19 04:25:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:18,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:18,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:18,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:25:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:19,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:19,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 04:25:19,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 04:25:20,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:20,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892800612] [2021-11-19 04:25:20,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892800612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:20,257 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:20,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:25:20,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664666345] [2021-11-19 04:25:20,258 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:20,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:25:20,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:25:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:20,261 INFO L87 Difference]: Start difference. First operand 398 states and 556 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:25:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:20,462 INFO L93 Difference]: Finished difference Result 819 states and 1146 transitions. [2021-11-19 04:25:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:25:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 129 [2021-11-19 04:25:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:20,467 INFO L225 Difference]: With dead ends: 819 [2021-11-19 04:25:20,468 INFO L226 Difference]: Without dead ends: 424 [2021-11-19 04:25:20,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:20,473 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 32 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:20,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1091 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:25:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-19 04:25:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 421. [2021-11-19 04:25:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 327 states have (on average 1.3914373088685015) internal successors, (455), 330 states have internal predecessors, (455), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:25:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 588 transitions. [2021-11-19 04:25:20,519 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 588 transitions. Word has length 129 [2021-11-19 04:25:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:20,520 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 588 transitions. [2021-11-19 04:25:20,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:25:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 588 transitions. [2021-11-19 04:25:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 04:25:20,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:20,531 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:25:20,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:20,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:20,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash -506105006, now seen corresponding path program 1 times [2021-11-19 04:25:20,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:20,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741042223] [2021-11-19 04:25:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:20,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:20,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:20,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:25:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:21,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:21,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:25:22,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:25:22,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:22,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741042223] [2021-11-19 04:25:22,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741042223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:22,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:22,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 04:25:22,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216610880] [2021-11-19 04:25:22,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:22,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:25:22,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:22,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:25:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:22,743 INFO L87 Difference]: Start difference. First operand 421 states and 588 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 04:25:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:22,809 INFO L93 Difference]: Finished difference Result 839 states and 1175 transitions. [2021-11-19 04:25:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:25:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 163 [2021-11-19 04:25:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:22,814 INFO L225 Difference]: With dead ends: 839 [2021-11-19 04:25:22,814 INFO L226 Difference]: Without dead ends: 421 [2021-11-19 04:25:22,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:22,818 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 539 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:22,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 542 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:25:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-19 04:25:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-19 04:25:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 327 states have (on average 1.3669724770642202) internal successors, (447), 330 states have internal predecessors, (447), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:25:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 580 transitions. [2021-11-19 04:25:22,848 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 580 transitions. Word has length 163 [2021-11-19 04:25:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:22,848 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 580 transitions. [2021-11-19 04:25:22,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 04:25:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 580 transitions. [2021-11-19 04:25:22,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 04:25:22,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:22,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:25:22,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:23,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:23,067 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:23,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 899086672, now seen corresponding path program 1 times [2021-11-19 04:25:23,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:23,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971787727] [2021-11-19 04:25:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:23,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:23,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:23,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:23,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:25:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:23,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:25:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:25:24,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:25:25,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:25,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971787727] [2021-11-19 04:25:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971787727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:25,074 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:25,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 04:25:25,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114022916] [2021-11-19 04:25:25,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:25,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:25:25,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:25:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:25:25,076 INFO L87 Difference]: Start difference. First operand 421 states and 580 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:27,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:25:27,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:27,308 INFO L93 Difference]: Finished difference Result 843 states and 1162 transitions. [2021-11-19 04:25:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:25:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 163 [2021-11-19 04:25:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:27,312 INFO L225 Difference]: With dead ends: 843 [2021-11-19 04:25:27,313 INFO L226 Difference]: Without dead ends: 419 [2021-11-19 04:25:27,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:25:27,316 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 9 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:27,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 3265 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 04:25:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-19 04:25:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-19 04:25:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 325 states have (on average 1.363076923076923) internal successors, (443), 328 states have internal predecessors, (443), 67 states have call successors, (67), 27 states have call predecessors, (67), 26 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-19 04:25:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 576 transitions. [2021-11-19 04:25:27,340 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 576 transitions. Word has length 163 [2021-11-19 04:25:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:27,342 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 576 transitions. [2021-11-19 04:25:27,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 576 transitions. [2021-11-19 04:25:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 04:25:27,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:27,346 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:25:27,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:27,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:27,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2078366486, now seen corresponding path program 1 times [2021-11-19 04:25:27,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:27,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068229944] [2021-11-19 04:25:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:27,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:27,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:27,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:27,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:25:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:28,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:28,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:25:28,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 04:25:29,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:29,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068229944] [2021-11-19 04:25:29,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068229944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:29,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:29,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:25:29,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035227868] [2021-11-19 04:25:29,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:29,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:25:29,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:29,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:25:29,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:29,528 INFO L87 Difference]: Start difference. First operand 419 states and 576 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 04:25:31,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:25:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:31,794 INFO L93 Difference]: Finished difference Result 918 states and 1268 transitions. [2021-11-19 04:25:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:25:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 163 [2021-11-19 04:25:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:31,799 INFO L225 Difference]: With dead ends: 918 [2021-11-19 04:25:31,800 INFO L226 Difference]: Without dead ends: 502 [2021-11-19 04:25:31,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:31,803 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 105 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:31,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1571 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 04:25:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-19 04:25:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 496. [2021-11-19 04:25:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 396 states have (on average 1.3686868686868687) internal successors, (542), 399 states have internal predecessors, (542), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 679 transitions. [2021-11-19 04:25:31,830 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 679 transitions. Word has length 163 [2021-11-19 04:25:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:31,831 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 679 transitions. [2021-11-19 04:25:31,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 04:25:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 679 transitions. [2021-11-19 04:25:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-19 04:25:31,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:31,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-11-19 04:25:31,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:32,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:32,060 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash -588749119, now seen corresponding path program 1 times [2021-11-19 04:25:32,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:32,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072336654] [2021-11-19 04:25:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:32,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:32,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:32,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:25:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:32,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:32,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 04:25:33,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 04:25:33,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:33,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072336654] [2021-11-19 04:25:33,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072336654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:33,725 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:33,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:25:33,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878887836] [2021-11-19 04:25:33,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:33,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:25:33,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:25:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:33,727 INFO L87 Difference]: Start difference. First operand 496 states and 679 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:33,782 INFO L93 Difference]: Finished difference Result 1134 states and 1566 transitions. [2021-11-19 04:25:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:25:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 181 [2021-11-19 04:25:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:33,789 INFO L225 Difference]: With dead ends: 1134 [2021-11-19 04:25:33,789 INFO L226 Difference]: Without dead ends: 641 [2021-11-19 04:25:33,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:33,792 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 74 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:33,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1158 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:25:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-19 04:25:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 497. [2021-11-19 04:25:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 397 states have (on average 1.3677581863979849) internal successors, (543), 400 states have internal predecessors, (543), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 680 transitions. [2021-11-19 04:25:33,822 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 680 transitions. Word has length 181 [2021-11-19 04:25:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:33,823 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 680 transitions. [2021-11-19 04:25:33,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 680 transitions. [2021-11-19 04:25:33,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-19 04:25:33,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:33,827 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-11-19 04:25:33,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:34,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:34,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:34,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1649606768, now seen corresponding path program 1 times [2021-11-19 04:25:34,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:34,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111465568] [2021-11-19 04:25:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:34,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:34,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:34,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:34,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:25:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:34,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:34,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:25:35,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:25:35,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:35,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111465568] [2021-11-19 04:25:35,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111465568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:35,638 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:35,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:25:35,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956697422] [2021-11-19 04:25:35,638 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:35,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:25:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:25:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:35,640 INFO L87 Difference]: Start difference. First operand 497 states and 680 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:35,709 INFO L93 Difference]: Finished difference Result 995 states and 1365 transitions. [2021-11-19 04:25:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:25:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 177 [2021-11-19 04:25:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:35,714 INFO L225 Difference]: With dead ends: 995 [2021-11-19 04:25:35,714 INFO L226 Difference]: Without dead ends: 501 [2021-11-19 04:25:35,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:35,718 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 0 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:35,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1628 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:25:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-19 04:25:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2021-11-19 04:25:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 401 states have (on average 1.3640897755610972) internal successors, (547), 404 states have internal predecessors, (547), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 684 transitions. [2021-11-19 04:25:35,744 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 684 transitions. Word has length 177 [2021-11-19 04:25:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:35,745 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 684 transitions. [2021-11-19 04:25:35,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 684 transitions. [2021-11-19 04:25:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-19 04:25:35,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:35,749 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-19 04:25:35,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:35,963 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:35,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1528177176, now seen corresponding path program 1 times [2021-11-19 04:25:35,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:35,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531850475] [2021-11-19 04:25:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:35,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:35,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:35,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:35,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:25:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:36,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:25:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:25:37,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:25:37,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:37,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531850475] [2021-11-19 04:25:37,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531850475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:25:37,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:25:37,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-19 04:25:37,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047109002] [2021-11-19 04:25:37,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:25:37,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:25:37,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:25:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:25:37,691 INFO L87 Difference]: Start difference. First operand 501 states and 684 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:37,950 INFO L93 Difference]: Finished difference Result 1007 states and 1379 transitions. [2021-11-19 04:25:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:25:37,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 181 [2021-11-19 04:25:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:37,956 INFO L225 Difference]: With dead ends: 1007 [2021-11-19 04:25:37,957 INFO L226 Difference]: Without dead ends: 509 [2021-11-19 04:25:37,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:25:37,961 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 0 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:37,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2719 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:25:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-19 04:25:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2021-11-19 04:25:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 409 states have (on average 1.3569682151589242) internal successors, (555), 412 states have internal predecessors, (555), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:37,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 692 transitions. [2021-11-19 04:25:37,992 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 692 transitions. Word has length 181 [2021-11-19 04:25:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:37,993 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 692 transitions. [2021-11-19 04:25:37,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 692 transitions. [2021-11-19 04:25:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 04:25:37,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:37,998 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-19 04:25:38,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:38,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:38,224 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash 811039397, now seen corresponding path program 1 times [2021-11-19 04:25:38,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:38,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447641337] [2021-11-19 04:25:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:38,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:38,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:38,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:38,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:25:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:38,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:25:38,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 04:25:39,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 04:25:40,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:40,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447641337] [2021-11-19 04:25:40,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447641337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:25:40,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:25:40,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-19 04:25:40,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892462392] [2021-11-19 04:25:40,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:25:40,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 04:25:40,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:40,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 04:25:40,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:25:40,380 INFO L87 Difference]: Start difference. First operand 509 states and 692 transitions. Second operand has 16 states, 16 states have (on average 9.375) internal successors, (150), 16 states have internal predecessors, (150), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:41,288 INFO L93 Difference]: Finished difference Result 1031 states and 1407 transitions. [2021-11-19 04:25:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:25:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.375) internal successors, (150), 16 states have internal predecessors, (150), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2021-11-19 04:25:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:41,292 INFO L225 Difference]: With dead ends: 1031 [2021-11-19 04:25:41,293 INFO L226 Difference]: Without dead ends: 525 [2021-11-19 04:25:41,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-19 04:25:41,296 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 0 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:41,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4386 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:25:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-19 04:25:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2021-11-19 04:25:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 425 states have (on average 1.3435294117647059) internal successors, (571), 428 states have internal predecessors, (571), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 708 transitions. [2021-11-19 04:25:41,322 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 708 transitions. Word has length 193 [2021-11-19 04:25:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:41,322 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 708 transitions. [2021-11-19 04:25:41,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.375) internal successors, (150), 16 states have internal predecessors, (150), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 708 transitions. [2021-11-19 04:25:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-19 04:25:41,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:41,328 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-19 04:25:41,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:41,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:41,547 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -936760404, now seen corresponding path program 2 times [2021-11-19 04:25:41,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:41,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435397141] [2021-11-19 04:25:41,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:25:41,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:41,554 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:41,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:25:42,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:25:42,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:25:42,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:42,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2021-11-19 04:25:42,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-19 04:25:42,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:42,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435397141] [2021-11-19 04:25:42,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435397141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:42,821 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:42,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:25:42,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105269471] [2021-11-19 04:25:42,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:42,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:25:42,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:25:42,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:42,823 INFO L87 Difference]: Start difference. First operand 525 states and 708 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:25:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:42,901 INFO L93 Difference]: Finished difference Result 1048 states and 1417 transitions. [2021-11-19 04:25:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:25:42,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 205 [2021-11-19 04:25:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:42,907 INFO L225 Difference]: With dead ends: 1048 [2021-11-19 04:25:42,907 INFO L226 Difference]: Without dead ends: 526 [2021-11-19 04:25:42,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:42,910 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:42,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1083 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:25:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-19 04:25:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-11-19 04:25:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 426 states have (on average 1.3427230046948357) internal successors, (572), 429 states have internal predecessors, (572), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 709 transitions. [2021-11-19 04:25:42,936 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 709 transitions. Word has length 205 [2021-11-19 04:25:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:42,937 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 709 transitions. [2021-11-19 04:25:42,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:25:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 709 transitions. [2021-11-19 04:25:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-19 04:25:42,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:42,942 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-19 04:25:42,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:43,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:43,162 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1669263150, now seen corresponding path program 1 times [2021-11-19 04:25:43,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:43,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358627397] [2021-11-19 04:25:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:43,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:43,165 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:25:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:43,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 04:25:43,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:25:45,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:25:46,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:46,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358627397] [2021-11-19 04:25:46,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358627397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:25:46,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:25:46,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-19 04:25:46,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368704462] [2021-11-19 04:25:46,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:25:46,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 04:25:46,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 04:25:46,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-19 04:25:46,621 INFO L87 Difference]: Start difference. First operand 526 states and 709 transitions. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:48,240 INFO L93 Difference]: Finished difference Result 1051 states and 1420 transitions. [2021-11-19 04:25:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 04:25:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 205 [2021-11-19 04:25:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:48,245 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 04:25:48,245 INFO L226 Difference]: Without dead ends: 528 [2021-11-19 04:25:48,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-19 04:25:48,249 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 0 mSDsluCounter, 9968 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10526 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:48,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10526 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 04:25:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-19 04:25:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-11-19 04:25:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 428 states have (on average 1.341121495327103) internal successors, (574), 431 states have internal predecessors, (574), 69 states have call successors, (69), 31 states have call predecessors, (69), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-19 04:25:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 711 transitions. [2021-11-19 04:25:48,274 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 711 transitions. Word has length 205 [2021-11-19 04:25:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:48,275 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 711 transitions. [2021-11-19 04:25:48,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 711 transitions. [2021-11-19 04:25:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-19 04:25:48,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:48,279 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-19 04:25:48,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:48,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:48,506 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash -402356279, now seen corresponding path program 2 times [2021-11-19 04:25:48,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:48,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179079732] [2021-11-19 04:25:48,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:25:48,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:48,509 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:48,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:25:49,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:25:49,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:25:49,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:49,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-19 04:25:49,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2021-11-19 04:25:49,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:49,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179079732] [2021-11-19 04:25:49,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179079732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:49,806 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:49,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:25:49,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561838755] [2021-11-19 04:25:49,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:49,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:25:49,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:25:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:49,808 INFO L87 Difference]: Start difference. First operand 528 states and 711 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:25:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:50,679 INFO L93 Difference]: Finished difference Result 1069 states and 1452 transitions. [2021-11-19 04:25:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:25:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 207 [2021-11-19 04:25:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:50,687 INFO L225 Difference]: With dead ends: 1069 [2021-11-19 04:25:50,688 INFO L226 Difference]: Without dead ends: 544 [2021-11-19 04:25:50,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:25:50,691 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 28 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:50,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1096 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 04:25:50,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-19 04:25:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2021-11-19 04:25:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 436 states have (on average 1.341743119266055) internal successors, (585), 440 states have internal predecessors, (585), 71 states have call successors, (71), 31 states have call predecessors, (71), 30 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 04:25:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 726 transitions. [2021-11-19 04:25:50,718 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 726 transitions. Word has length 207 [2021-11-19 04:25:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:50,719 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 726 transitions. [2021-11-19 04:25:50,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 04:25:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 726 transitions. [2021-11-19 04:25:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-19 04:25:50,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:50,723 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:25:50,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 04:25:50,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:50,951 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1276392076, now seen corresponding path program 1 times [2021-11-19 04:25:50,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:50,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672283831] [2021-11-19 04:25:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:50,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:50,953 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:50,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:25:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:51,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:25:51,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 04:25:52,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-19 04:25:52,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:52,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672283831] [2021-11-19 04:25:52,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672283831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:52,677 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:52,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:25:52,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139742959] [2021-11-19 04:25:52,677 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:52,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:25:52,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:25:52,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:52,679 INFO L87 Difference]: Start difference. First operand 538 states and 726 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:52,751 INFO L93 Difference]: Finished difference Result 1076 states and 1456 transitions. [2021-11-19 04:25:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:25:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 219 [2021-11-19 04:25:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:52,757 INFO L225 Difference]: With dead ends: 1076 [2021-11-19 04:25:52,757 INFO L226 Difference]: Without dead ends: 541 [2021-11-19 04:25:52,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:25:52,761 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 2 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:52,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1089 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:25:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-11-19 04:25:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2021-11-19 04:25:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 437 states have (on average 1.3409610983981692) internal successors, (586), 441 states have internal predecessors, (586), 71 states have call successors, (71), 31 states have call predecessors, (71), 30 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 04:25:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 727 transitions. [2021-11-19 04:25:52,787 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 727 transitions. Word has length 219 [2021-11-19 04:25:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:52,788 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 727 transitions. [2021-11-19 04:25:52,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:52,789 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 727 transitions. [2021-11-19 04:25:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-19 04:25:52,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:52,792 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:25:52,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:53,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:53,015 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1480799412, now seen corresponding path program 1 times [2021-11-19 04:25:53,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:53,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886821857] [2021-11-19 04:25:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:53,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:53,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:53,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:53,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:25:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:53,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:25:53,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 04:25:54,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-19 04:25:54,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:54,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886821857] [2021-11-19 04:25:54,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886821857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:54,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:54,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:25:54,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889017062] [2021-11-19 04:25:54,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:54,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:25:54,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:25:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:25:54,838 INFO L87 Difference]: Start difference. First operand 539 states and 727 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:55,043 INFO L93 Difference]: Finished difference Result 1077 states and 1456 transitions. [2021-11-19 04:25:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:25:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 219 [2021-11-19 04:25:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:55,049 INFO L225 Difference]: With dead ends: 1077 [2021-11-19 04:25:55,049 INFO L226 Difference]: Without dead ends: 541 [2021-11-19 04:25:55,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:25:55,066 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 395 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:55,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1813 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:25:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-11-19 04:25:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2021-11-19 04:25:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 437 states have (on average 1.3363844393592677) internal successors, (584), 441 states have internal predecessors, (584), 71 states have call successors, (71), 31 states have call predecessors, (71), 30 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 04:25:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 725 transitions. [2021-11-19 04:25:55,096 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 725 transitions. Word has length 219 [2021-11-19 04:25:55,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:55,097 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 725 transitions. [2021-11-19 04:25:55,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 725 transitions. [2021-11-19 04:25:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-19 04:25:55,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:55,101 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:25:55,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:55,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:55,315 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 124635978, now seen corresponding path program 1 times [2021-11-19 04:25:55,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:55,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584691910] [2021-11-19 04:25:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:55,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:55,319 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:55,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:25:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:56,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:25:56,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-19 04:25:56,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-11-19 04:25:57,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:57,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584691910] [2021-11-19 04:25:57,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584691910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:57,306 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:57,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:25:57,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567567659] [2021-11-19 04:25:57,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:57,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:25:57,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:25:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:25:57,310 INFO L87 Difference]: Start difference. First operand 539 states and 725 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:57,428 INFO L93 Difference]: Finished difference Result 1079 states and 1455 transitions. [2021-11-19 04:25:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:25:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 237 [2021-11-19 04:25:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:57,433 INFO L225 Difference]: With dead ends: 1079 [2021-11-19 04:25:57,434 INFO L226 Difference]: Without dead ends: 543 [2021-11-19 04:25:57,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:25:57,441 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 4 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:57,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1625 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:25:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-19 04:25:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2021-11-19 04:25:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 439 states have (on average 1.3348519362186788) internal successors, (586), 443 states have internal predecessors, (586), 71 states have call successors, (71), 31 states have call predecessors, (71), 30 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 04:25:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 727 transitions. [2021-11-19 04:25:57,471 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 727 transitions. Word has length 237 [2021-11-19 04:25:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:57,472 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 727 transitions. [2021-11-19 04:25:57,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 04:25:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 727 transitions. [2021-11-19 04:25:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-19 04:25:57,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:57,476 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:25:57,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:57,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:57,699 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:25:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2116616354, now seen corresponding path program 1 times [2021-11-19 04:25:57,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:57,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852956930] [2021-11-19 04:25:57,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:57,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:57,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:57,702 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:57,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:25:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:58,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:25:58,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-19 04:25:59,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-19 04:25:59,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:59,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852956930] [2021-11-19 04:25:59,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852956930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:25:59,641 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:25:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:25:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279578350] [2021-11-19 04:25:59,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:25:59,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:25:59,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:25:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:25:59,643 INFO L87 Difference]: Start difference. First operand 541 states and 727 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:59,910 INFO L93 Difference]: Finished difference Result 1085 states and 1462 transitions. [2021-11-19 04:25:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:25:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 242 [2021-11-19 04:25:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:59,920 INFO L225 Difference]: With dead ends: 1085 [2021-11-19 04:25:59,920 INFO L226 Difference]: Without dead ends: 547 [2021-11-19 04:25:59,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:25:59,924 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 9 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:59,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2165 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:25:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-19 04:25:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 543. [2021-11-19 04:25:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 441 states have (on average 1.3333333333333333) internal successors, (588), 445 states have internal predecessors, (588), 71 states have call successors, (71), 31 states have call predecessors, (71), 30 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 04:25:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 729 transitions. [2021-11-19 04:25:59,952 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 729 transitions. Word has length 242 [2021-11-19 04:25:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:59,953 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 729 transitions. [2021-11-19 04:25:59,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 04:25:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 729 transitions. [2021-11-19 04:25:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-19 04:25:59,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:59,957 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:25:59,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:26:00,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:26:00,170 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:26:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:26:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1783783483, now seen corresponding path program 1 times [2021-11-19 04:26:00,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:26:00,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169995298] [2021-11-19 04:26:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:26:00,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:26:00,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:26:00,174 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:26:00,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:26:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:26:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:26:01,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:26:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-19 04:26:01,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:26:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-11-19 04:26:02,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:26:02,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169995298] [2021-11-19 04:26:02,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169995298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:26:02,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:26:02,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-19 04:26:02,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963786150] [2021-11-19 04:26:02,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:26:02,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:26:02,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:26:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:26:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:26:02,166 INFO L87 Difference]: Start difference. First operand 543 states and 729 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 04:26:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:26:08,150 INFO L93 Difference]: Finished difference Result 1128 states and 1537 transitions. [2021-11-19 04:26:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:26:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 241 [2021-11-19 04:26:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:26:08,158 INFO L225 Difference]: With dead ends: 1128 [2021-11-19 04:26:08,158 INFO L226 Difference]: Without dead ends: 588 [2021-11-19 04:26:08,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:26:08,161 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 60 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:26:08,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 3896 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 04:26:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-11-19 04:26:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 570. [2021-11-19 04:26:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 462 states have (on average 1.3376623376623376) internal successors, (618), 469 states have internal predecessors, (618), 77 states have call successors, (77), 31 states have call predecessors, (77), 30 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-11-19 04:26:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 771 transitions. [2021-11-19 04:26:08,191 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 771 transitions. Word has length 241 [2021-11-19 04:26:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:26:08,192 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 771 transitions. [2021-11-19 04:26:08,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 04:26:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 771 transitions. [2021-11-19 04:26:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-19 04:26:08,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:26:08,196 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:26:08,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:26:08,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:26:08,411 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:26:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:26:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2091486352, now seen corresponding path program 2 times [2021-11-19 04:26:08,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:26:08,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410948437] [2021-11-19 04:26:08,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:26:08,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:26:08,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:26:08,413 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:26:08,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:26:08,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:26:08,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:26:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:26:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:26:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2021-11-19 04:26:09,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:26:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-19 04:26:09,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:26:09,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410948437] [2021-11-19 04:26:09,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410948437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:26:09,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:26:09,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:26:09,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734357760] [2021-11-19 04:26:09,952 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:26:09,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:26:09,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:26:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:26:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:26:09,954 INFO L87 Difference]: Start difference. First operand 570 states and 771 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 04:26:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:26:10,033 INFO L93 Difference]: Finished difference Result 1162 states and 1581 transitions. [2021-11-19 04:26:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:26:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 253 [2021-11-19 04:26:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:26:10,061 INFO L225 Difference]: With dead ends: 1162 [2021-11-19 04:26:10,061 INFO L226 Difference]: Without dead ends: 595 [2021-11-19 04:26:10,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:26:10,065 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 3 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:26:10,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1082 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:26:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-19 04:26:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2021-11-19 04:26:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 485 states have (on average 1.3298969072164948) internal successors, (645), 491 states have internal predecessors, (645), 77 states have call successors, (77), 31 states have call predecessors, (77), 30 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-11-19 04:26:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 798 transitions. [2021-11-19 04:26:10,091 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 798 transitions. Word has length 253 [2021-11-19 04:26:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:26:10,095 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 798 transitions. [2021-11-19 04:26:10,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 04:26:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 798 transitions. [2021-11-19 04:26:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-19 04:26:10,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:26:10,100 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:26:10,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:26:10,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:26:10,315 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:26:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:26:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1927372185, now seen corresponding path program 1 times [2021-11-19 04:26:10,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:26:10,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881539371] [2021-11-19 04:26:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:26:10,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:26:10,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:26:10,318 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:26:10,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:26:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:26:16,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-19 04:26:16,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:26:17,097 INFO L354 Elim1Store]: treesize reduction 1148, result has 6.2 percent of original size [2021-11-19 04:26:17,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 14 case distinctions, treesize of input 235 treesize of output 268 [2021-11-19 04:26:17,159 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:26:17,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 196 [2021-11-19 04:26:17,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:26:17,200 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:26:17,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 193 treesize of output 183 [2021-11-19 04:26:41,643 INFO L354 Elim1Store]: treesize reduction 502, result has 19.4 percent of original size [2021-11-19 04:26:41,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 64 case distinctions, treesize of input 202 treesize of output 299 [2021-11-19 04:26:51,977 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 04:26:51,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 04:26:51,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:26:51,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881539371] [2021-11-19 04:26:51,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 04:26:51,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [366526490] [2021-11-19 04:26:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:26:51,979 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 04:26:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/cvc4 [2021-11-19 04:26:52,011 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 04:26:52,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 04:35:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:48,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-19 04:35:48,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:35:48,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-19 04:35:48,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286234300] [2021-11-19 04:35:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:48,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:35:48,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:35:48,726 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:35:48,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 04:35:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:51,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-19 04:35:51,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:35:51,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-19 04:35:51,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:51,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 04:35:51,109 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-19 04:35:51,109 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 04:35:51,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 04:35:51,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-19 04:35:51,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 04:35:51,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:35:51,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51460012-5581-458e-bbcb-9b649a5aef2c/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:35:51,735 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:35:51,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:35:51,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:35:51 BoogieIcfgContainer [2021-11-19 04:35:51,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:35:51,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:35:51,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:35:51,828 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:35:51,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:25:15" (3/4) ... [2021-11-19 04:35:51,831 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:35:51,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:35:51,831 INFO L158 Benchmark]: Toolchain (without parser) took 649010.38ms. Allocated memory was 67.1MB in the beginning and 197.1MB in the end (delta: 130.0MB). Free memory was 39.8MB in the beginning and 129.8MB in the end (delta: -90.0MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2021-11-19 04:35:51,833 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 67.1MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:35:51,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1928.25ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.6MB in the beginning and 58.7MB in the end (delta: -19.1MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2021-11-19 04:35:51,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 219.54ms. Allocated memory is still 98.6MB. Free memory was 58.2MB in the beginning and 48.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:35:51,834 INFO L158 Benchmark]: Boogie Preprocessor took 158.82ms. Allocated memory is still 98.6MB. Free memory was 48.6MB in the beginning and 38.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:35:51,835 INFO L158 Benchmark]: RCFGBuilder took 10841.29ms. Allocated memory was 98.6MB in the beginning and 163.6MB in the end (delta: 65.0MB). Free memory was 38.2MB in the beginning and 65.7MB in the end (delta: -27.5MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2021-11-19 04:35:51,835 INFO L158 Benchmark]: TraceAbstraction took 635852.53ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 64.6MB in the beginning and 129.8MB in the end (delta: -65.2MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2021-11-19 04:35:51,835 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 197.1MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:35:51,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 67.1MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1928.25ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.6MB in the beginning and 58.7MB in the end (delta: -19.1MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 219.54ms. Allocated memory is still 98.6MB. Free memory was 58.2MB in the beginning and 48.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.82ms. Allocated memory is still 98.6MB. Free memory was 48.6MB in the beginning and 38.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 10841.29ms. Allocated memory was 98.6MB in the beginning and 163.6MB in the end (delta: 65.0MB). Free memory was 38.2MB in the beginning and 65.7MB in the end (delta: -27.5MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * TraceAbstraction took 635852.53ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 64.6MB in the beginning and 129.8MB in the end (delta: -65.2MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 197.1MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 3694]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of __builtin_object_size at line 3770, overapproximation of large string literal at line 3941. Possible FailurePath: [L3717] int LDV_IN_INTERRUPT = 1; [L3718] int ldv_state_variable_2 ; [L3719] int ldv_timer_state_1 = 0; [L3720] int ref_cnt ; [L3721] struct file *lsi_fops_group2 ; [L3722] struct inode *lsi_fops_group1 ; [L3723] int ldv_state_variable_1 ; [L3724] struct timer_list *ldv_timer_list_1 ; [L3725] int ldv_state_variable_0 ; [L3826-L3829] static struct mutex mraid_mm_mutex = {{1}, {{{{{0U}}, 3735899821U, 4294967295U, (void *)-1, {0, {0, 0}, "mraid_mm_mutex.wait_lock", 0, 0UL}}}}, {& mraid_mm_mutex.wait_list, & mraid_mm_mutex.wait_list}, 0, 0, (void *)(& mraid_mm_mutex), {0, {0, 0}, "mraid_mm_mutex", 0, 0UL}}; [L3847] static int dbglevel = 0; [L3848-L3854] static char const __kstrtab_mraid_mm_register_adp[22U] = { 'm', 'r', 'a', 'i', 'd', '_', 'm', 'm', '_', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'a', 'd', 'p', '\000'}; [L3856] struct kernel_symbol const __ksymtab_mraid_mm_register_adp = {(unsigned long )(& mraid_mm_register_adp), (char const *)(& __kstrtab_mraid_mm_register_adp)}; [L3857-L3863] static char const __kstrtab_mraid_mm_unregister_adp[24U] = { 'm', 'r', 'a', 'i', 'd', '_', 'm', 'm', '_', 'u', 'n', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'a', 'd', 'p', '\000'}; [L3865] struct kernel_symbol const __ksymtab_mraid_mm_unregister_adp = {(unsigned long )(& mraid_mm_unregister_adp), (char const *)(& __kstrtab_mraid_mm_unregister_adp)}; [L3866-L3873] static char const __kstrtab_mraid_mm_adapter_app_handle[28U] = { 'm', 'r', 'a', 'i', 'd', '_', 'm', 'm', '_', 'a', 'd', 'a', 'p', 't', 'e', 'r', '_', 'a', 'p', 'p', '_', 'h', 'a', 'n', 'd', 'l', 'e', '\000'}; [L3875] struct kernel_symbol const __ksymtab_mraid_mm_adapter_app_handle = {(unsigned long )(& mraid_mm_adapter_app_handle), (char const *)(& __kstrtab_mraid_mm_adapter_app_handle)}; [L3876] static uint32_t drvr_ver = 35652103U; [L3877] static int adapters_count_g ; [L3878] static struct list_head adapters_list_g ; [L3879] static wait_queue_head_t wait_q ; [L3880-L3883] static struct file_operations const lsi_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, 0, 0, & mraid_mm_unlocked_ioctl, & mraid_mm_compat_ioctl, 0, & mraid_mm_open, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L3884-L3885] static struct miscdevice megaraid_mm_dev = {255, "megadev0", & lsi_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L4911] int ldv_retval_0 ; [L4912] int ldv_retval_1 ; [L5199] int ldv_spin = 0; [L4977] unsigned int ldvarg1 ; [L4978] unsigned int tmp ; [L4979] unsigned long ldvarg4 ; [L4980] unsigned long tmp___0 ; [L4981] loff_t ldvarg3 ; [L4982] loff_t tmp___1 ; [L4983] unsigned long ldvarg0 ; [L4984] unsigned long tmp___2 ; [L4985] unsigned int ldvarg5 ; [L4986] unsigned int tmp___3 ; [L4987] int ldvarg2 ; [L4988] int tmp___4 ; [L4989] int tmp___5 ; [L4990] int tmp___6 ; [L4991] int tmp___7 ; [L4992] adapters_count_g = __VERIFIER_nondet_int() [L4994] tmp = __VERIFIER_nondet_uint() [L4995] ldvarg1 = tmp [L4996] tmp___0 = __VERIFIER_nondet_ulong() [L4997] ldvarg4 = tmp___0 [L4998] tmp___1 = __VERIFIER_nondet_loff_t() [L4999] ldvarg3 = tmp___1 [L5000] tmp___2 = __VERIFIER_nondet_ulong() [L5001] ldvarg0 = tmp___2 [L5002] tmp___3 = __VERIFIER_nondet_uint() [L5003] ldvarg5 = tmp___3 [L5004] tmp___4 = __VERIFIER_nondet_int() [L5005] ldvarg2 = tmp___4 [L5006] FCALL ldv_initialize() [L5007] ldv_state_variable_1 = 1 [L5008] ref_cnt = 0 [L5009] ldv_state_variable_0 = 1 [L5010] ldv_state_variable_2 = 0 [L5012] tmp___5 = __VERIFIER_nondet_int() [L5014] case 0: [L5020] case 1: [L5021] COND TRUE ldv_state_variable_0 != 0 [L5022] tmp___6 = __VERIFIER_nondet_int() [L5024] case 0: [L5032] case 1: [L5033] COND TRUE ldv_state_variable_0 == 1 [L5034] CALL, EXPR mraid_mm_init() [L4871] int err ; [L4872] struct lock_class_key __key ; [L4874] COND TRUE dbglevel >= 0 [L4878] CALL, EXPR ldv_misc_register_24(& megaraid_mm_dev) [L5177] ldv_func_ret_type___3 ldv_func_res ; [L5178] int tmp ; [L5180] CALL, EXPR misc_register(misc) [L5349] return __VERIFIER_nondet_int(); [L5180] RET, EXPR misc_register(misc) [L5180] tmp = misc_register(misc) [L5181] ldv_func_res = tmp [L5182] ldv_state_variable_2 = 1 [L5183] CALL ldv_file_operations_2() [L4926] void *tmp ; [L4927] void *tmp___0 ; [L4929] CALL, EXPR ldv_zalloc(1032UL) [L3659] void *p ; [L3660] void *tmp ; [L3661] int tmp___0 ; [L3663] tmp___0 = __VERIFIER_nondet_int() [L3664] COND TRUE tmp___0 != 0 [L3665] return ((void *)0); [L4929] RET, EXPR ldv_zalloc(1032UL) [L4929] tmp = ldv_zalloc(1032UL) [L4930] lsi_fops_group1 = (struct inode *)tmp [L4931] CALL, EXPR ldv_zalloc(512UL) [L3659] void *p ; [L3660] void *tmp ; [L3661] int tmp___0 ; [L3663] tmp___0 = __VERIFIER_nondet_int() [L3664] COND TRUE tmp___0 != 0 [L3665] return ((void *)0); [L4931] RET, EXPR ldv_zalloc(512UL) [L4931] tmp___0 = ldv_zalloc(512UL) [L4932] lsi_fops_group2 = (struct file *)tmp___0 [L5183] RET ldv_file_operations_2() [L5184] return (ldv_func_res); [L4878] RET, EXPR ldv_misc_register_24(& megaraid_mm_dev) [L4878] err = ldv_misc_register_24(& megaraid_mm_dev) [L4879] COND FALSE !(err < 0) [L4887] FCALL __init_waitqueue_head(& wait_q, "&wait_q", & __key) [L4888] CALL INIT_LIST_HEAD(& adapters_list_g) [L3546] list->next = list [L3547] list->prev = list [L4888] RET INIT_LIST_HEAD(& adapters_list_g) [L4889] return (0); [L4889] return (0); [L5034] RET, EXPR mraid_mm_init() [L5034] ldv_retval_0 = mraid_mm_init() [L5035] COND TRUE ldv_retval_0 == 0 [L5036] ldv_state_variable_0 = 3 [L5039] COND FALSE !(ldv_retval_0 != 0) [L5012] tmp___5 = __VERIFIER_nondet_int() [L5014] case 0: [L5020] case 1: [L5054] case 2: [L5055] COND TRUE ldv_state_variable_2 != 0 [L5056] tmp___7 = __VERIFIER_nondet_int() [L5058] case 0: [L5065] case 1: [L5072] case 2: [L5073] COND TRUE ldv_state_variable_2 == 1 [L5074] CALL, EXPR mraid_mm_open(lsi_fops_group1, lsi_fops_group2) [L3888] bool tmp ; [L3889] int tmp___0 ; [L3891] CALL, EXPR capable(21) [L5297] return __VERIFIER_nondet_bool(); [L3891] RET, EXPR capable(21) [L3891] tmp = capable(21) [L3892] COND TRUE \read(tmp) [L3893] tmp___0 = 0 [L3897] COND FALSE !(\read(tmp___0)) [L3901] return (0); [L5074] RET, EXPR mraid_mm_open(lsi_fops_group1, lsi_fops_group2) [L5074] ldv_retval_1 = mraid_mm_open(lsi_fops_group1, lsi_fops_group2) [L5075] COND TRUE ldv_retval_1 == 0 [L5076] ldv_state_variable_2 = 2 [L5077] ref_cnt = ref_cnt + 1 [L5012] tmp___5 = __VERIFIER_nondet_int() [L5014] case 0: [L5020] case 1: [L5054] case 2: [L5055] COND TRUE ldv_state_variable_2 != 0 [L5056] tmp___7 = __VERIFIER_nondet_int() [L5058] case 0: [L5065] case 1: [L5072] case 2: [L5083] case 3: [L5084] COND TRUE ldv_state_variable_2 == 2 [L5085] CALL mraid_mm_unlocked_ioctl(lsi_fops_group2, ldvarg1, ldvarg0) [L3998] int err ; [L4000] FCALL mutex_lock_nested(& mraid_mm_mutex, 0U) [L4001] CALL mraid_mm_ioctl(filep, cmd, arg) [L3906] uioc_t *kioc ; [L3907] char signature[16U] ; [L3908] unsigned int tmp ; [L3909] int rval ; [L3910] mraid_mmadp_t *adp ; [L3911] uint8_t old_ioctl ; [L3912] int drvrcmd_rval ; [L3913] void *argp ; [L3914] unsigned long tmp___0 ; [L3915] int tmp___1 ; [L3917] signature[0] = 0 [L3918] tmp = 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND FALSE !(tmp >= 16U) [L3924] signature[tmp] = (char)0 [L3925] tmp = tmp + 1U [L3919] COND TRUE 1 [L3920] COND TRUE tmp >= 16U [L3927] argp = (void *)arg [L3928] COND FALSE !(((cmd >> 8) & 255U) != 109U && cmd != 128U) [L3932] CALL, EXPR copy_from_user((void *)(& signature), (void const *)argp, 16UL) [L3765] int sz ; [L3766] unsigned long tmp ; [L3767] long tmp___0 ; [L3768] long tmp___1 ; [L3770] tmp = __builtin_object_size((void const *)to, 0) [L3771] sz = (int )tmp [L3772] FCALL might_fault() [L3773] CALL, EXPR ldv__builtin_expect(sz < 0, 1L) [L3707] return (exp); [L3773] RET, EXPR ldv__builtin_expect(sz < 0, 1L) [L3773] tmp___0 = ldv__builtin_expect(sz < 0, 1L) [L3774] COND TRUE tmp___0 != 0L [L3775] CALL, EXPR _copy_from_user(to, from, (unsigned int )n) [L5283] return __VERIFIER_nondet_ulong(); [L3775] RET, EXPR _copy_from_user(to, from, (unsigned int )n) [L3775] n = _copy_from_user(to, from, (unsigned int )n) [L3784] return (n); [L3932] RET, EXPR copy_from_user((void *)(& signature), (void const *)argp, 16UL) [L3932] tmp___0 = copy_from_user((void *)(& signature), (void const *)argp, 16UL) [L3933] COND FALSE !(tmp___0 != 0UL) [L3941-L3942] tmp___1 = memcmp((void const *)(& signature), (void const *)"$$_EXTD_IOCTL_$$", 16UL) [L3943] COND FALSE !(tmp___1 == 0) [L3946] old_ioctl = 1U [L3948] COND FALSE !((unsigned int )old_ioctl == 0U) [L3952] CALL, EXPR handle_drvrcmd(argp, (int )old_ioctl, & drvrcmd_rval) [L4059] mimd_t *umimd ; [L4060] mimd_t kmimd ; [L4061] uint8_t opcode ; [L4062] uint8_t subopcode ; [L4063] unsigned long tmp ; [L4064] unsigned long tmp___0 ; [L4065] unsigned long tmp___1 ; [L4067] COND TRUE (unsigned int )old_ioctl != 0U [L4073] *rval = 0 [L4074] umimd = (mimd_t *)arg [L4075] CALL, EXPR copy_from_user((void *)(& kmimd), (void const *)umimd, 110UL) [L3765] int sz ; [L3766] unsigned long tmp ; [L3767] long tmp___0 ; [L3768] long tmp___1 ; [L3770] tmp = __builtin_object_size((void const *)to, 0) [L3771] sz = (int )tmp [L3772] FCALL might_fault() [L3773] CALL, EXPR ldv__builtin_expect(sz < 0, 1L) [L3707] return (exp); [L3773] RET, EXPR ldv__builtin_expect(sz < 0, 1L) [L3773] tmp___0 = ldv__builtin_expect(sz < 0, 1L) [L3774] COND TRUE tmp___0 != 0L [L3775] CALL, EXPR _copy_from_user(to, from, (unsigned int )n) [L5283] return __VERIFIER_nondet_ulong(); [L3775] RET, EXPR _copy_from_user(to, from, (unsigned int )n) [L3775] n = _copy_from_user(to, from, (unsigned int )n) [L3784] return (n); [L4075] RET, EXPR copy_from_user((void *)(& kmimd), (void const *)umimd, 110UL) [L4075] tmp = copy_from_user((void *)(& kmimd), (void const *)umimd, 110UL) [L4076] COND FALSE !(tmp != 0UL) [L4080] EXPR kmimd.ui.fcs.opcode [L4080] opcode = kmimd.ui.fcs.opcode [L4081] EXPR kmimd.ui.fcs.subopcode [L4081] subopcode = kmimd.ui.fcs.subopcode [L4082] COND TRUE (unsigned int )opcode != 130U [L4083] return (1); [L4083] return (1); [L3952] RET, EXPR handle_drvrcmd(argp, (int )old_ioctl, & drvrcmd_rval) [L3952] rval = handle_drvrcmd(argp, (int )old_ioctl, & drvrcmd_rval) [L3953] EXPR \read(rval) [L3953] COND FALSE !(rval < 0) [L3956] EXPR \read(rval) [L3956] COND FALSE !(rval == 0) [L3960] rval = 0 [L3961] CALL, EXPR mraid_mm_get_adapter((mimd_t *)argp, & rval) [L4008] mraid_mmadp_t *adapter ; [L4009] mimd_t mimd ; [L4010] uint32_t adapno ; [L4011] int iterator ; [L4012] unsigned long tmp ; [L4013] struct list_head const *__mptr ; [L4014] int tmp___0 ; [L4015] struct list_head const *__mptr___0 ; [L4017] CALL, EXPR copy_from_user((void *)(& mimd), (void const *)umimd, 110UL) [L3765] int sz ; [L3766] unsigned long tmp ; [L3767] long tmp___0 ; [L3768] long tmp___1 ; [L3770] tmp = __builtin_object_size((void const *)to, 0) [L3771] sz = (int )tmp [L3772] FCALL might_fault() [L3773] CALL, EXPR ldv__builtin_expect(sz < 0, 1L) [L3707] return (exp); [L3773] RET, EXPR ldv__builtin_expect(sz < 0, 1L) [L3773] tmp___0 = ldv__builtin_expect(sz < 0, 1L) [L3774] COND TRUE tmp___0 != 0L [L3775] CALL, EXPR _copy_from_user(to, from, (unsigned int )n) [L5283] return __VERIFIER_nondet_ulong(); [L3775] RET, EXPR _copy_from_user(to, from, (unsigned int )n) [L3775] n = _copy_from_user(to, from, (unsigned int )n) [L3784] return (n); [L4017] RET, EXPR copy_from_user((void *)(& mimd), (void const *)umimd, 110UL) [L4017] tmp = copy_from_user((void *)(& mimd), (void const *)umimd, 110UL) [L4018] COND FALSE !(tmp != 0UL) [L4023] EXPR mimd.ui.fcs.adapno [L4023] adapno = (unsigned int )mimd.ui.fcs.adapno ^ 27904U [L4024] EXPR \read(adapters_count_g) [L4024] COND FALSE !((uint32_t )adapters_count_g <= adapno) [L4029] adapter = (mraid_mmadp_t *)0 [L4030] iterator = 0 [L4031] EXPR adapters_list_g.next [L4031] __mptr = (struct list_head const *)adapters_list_g.next [L4032] adapter = (mraid_mmadp_t *)__mptr + 0xffffffffffffffd0UL [L4044] COND FALSE !((unsigned long )(& adapter->list) != (unsigned long )(& adapters_list_g)) [L4049] COND FALSE !((unsigned long )adapter == (unsigned long )((mraid_mmadp_t *)0)) [L4054] return (adapter); [L4054] return (adapter); [L3961] RET, EXPR mraid_mm_get_adapter((mimd_t *)argp, & rval) [L3961] adp = mraid_mm_get_adapter((mimd_t *)argp, & rval) [L3962] COND FALSE !((unsigned long )adp == (unsigned long )((mraid_mmadp_t *)0)) [L3966] EXPR adp->quiescent [L3966] COND FALSE !(adp->quiescent == 0U) [L3974] CALL, EXPR mraid_mm_alloc_kioc(adp) [L4323] uioc_t *kioc ; [L4324] struct list_head *head ; [L4325] unsigned long flags ; [L4326] int tmp ; [L4327] struct list_head const *__mptr ; [L4329] FCALL down(& adp->kioc_semaphore) [L4330] CALL ldv_spin_lock() [L5236] ldv_spin = 1 [L4330] RET ldv_spin_lock() [L4331] head = & adp->kioc_pool [L4332] CALL, EXPR list_empty((struct list_head const *)head) [L3578] EXPR head->next [L3578] return ((unsigned long )((struct list_head const *)head->next) == (unsigned long )head); [L4332] RET, EXPR list_empty((struct list_head const *)head) [L4332] tmp = list_empty((struct list_head const *)head) [L4333] COND TRUE tmp != 0 [L4334] FCALL up(& adp->kioc_semaphore) [L4335] CALL spin_unlock_irqrestore(& adp->kioc_pool_lock, flags) [L5118] CALL ldv_spin_unlock() [L5243] ldv_spin = 0 [L5118] RET ldv_spin_unlock() [L5119] CALL ldv_spin_unlock_irqrestore_8(lock, flags) [L3597] FCALL _raw_spin_unlock_irqrestore(& lock->ldv_6347.rlock, flags) [L5119] RET ldv_spin_unlock_irqrestore_8(lock, flags) [L4335] RET spin_unlock_irqrestore(& adp->kioc_pool_lock, flags) [L4336] COND TRUE dbglevel >= 0 [L4340] return ((uioc_t *)0); [L3974] RET, EXPR mraid_mm_alloc_kioc(adp) [L3974] kioc = mraid_mm_alloc_kioc(adp) [L3975] CALL mimd_to_kioc((mimd_t *)argp, adp, kioc) [L4111] mbox64_t *mbox64 ; [L4112] mbox_t *mbox ; [L4113] mraid_passthru_t *pthru32 ; [L4114] uint32_t adapno ; [L4115] uint8_t opcode ; [L4116] uint8_t subopcode ; [L4117] mimd_t mimd ; [L4118] unsigned long tmp ; [L4119] int tmp___0 ; [L4120] int tmp___1 ; [L4121] int tmp___2 ; [L4122] size_t __len ; [L4123] void *__ret ; [L4124] unsigned long tmp___3 ; [L4125] unsigned long tmp___4 ; [L4126] unsigned long tmp___5 ; [L4128] CALL, EXPR copy_from_user((void *)(& mimd), (void const *)umimd, 110UL) [L3765] int sz ; [L3766] unsigned long tmp ; [L3767] long tmp___0 ; [L3768] long tmp___1 ; [L3770] tmp = __builtin_object_size((void const *)to, 0) [L3771] sz = (int )tmp [L3772] FCALL might_fault() [L3773] CALL, EXPR ldv__builtin_expect(sz < 0, 1L) [L3707] return (exp); [L3773] RET, EXPR ldv__builtin_expect(sz < 0, 1L) [L3773] tmp___0 = ldv__builtin_expect(sz < 0, 1L) [L3774] COND TRUE tmp___0 != 0L [L3775] CALL, EXPR _copy_from_user(to, from, (unsigned int )n) [L5283] return __VERIFIER_nondet_ulong(); [L3775] RET, EXPR _copy_from_user(to, from, (unsigned int )n) [L3775] n = _copy_from_user(to, from, (unsigned int )n) [L3784] return (n); [L4128] RET, EXPR copy_from_user((void *)(& mimd), (void const *)umimd, 110UL) [L4128] tmp = copy_from_user((void *)(& mimd), (void const *)umimd, 110UL) [L4129] COND FALSE !(tmp != 0UL) [L4133] EXPR mimd.mbox[0] [L4133] (unsigned int )mimd.mbox[0] == 195U || (unsigned int )mimd.mbox[0] == 227U [L4133] EXPR mimd.mbox[0] [L4133] (unsigned int )mimd.mbox[0] == 195U || (unsigned int )mimd.mbox[0] == 227U [L4133] COND FALSE !((unsigned int )mimd.mbox[0] == 195U || (unsigned int )mimd.mbox[0] == 227U) [L4137] EXPR mimd.ui.fcs.opcode [L4137] opcode = mimd.ui.fcs.opcode [L4138] EXPR mimd.ui.fcs.subopcode [L4138] subopcode = mimd.ui.fcs.subopcode [L4139] EXPR mimd.ui.fcs.adapno [L4139] adapno = (unsigned int )mimd.ui.fcs.adapno ^ 27904U [L4140] EXPR \read(adapters_count_g) [L4140] COND FALSE !((uint32_t )adapters_count_g <= adapno) [L4144] kioc->adapno = adapno [L4145] kioc->mb_type = 0U [L4146] kioc->app_type = 0U [L4148] case 130: [L4166] case 129: [L4167] kioc->opcode = 0U [L4168] EXPR mimd.ui.fcs.length [L4168] kioc->xferlen = mimd.ui.fcs.length [L4169] EXPR kioc->xferlen [L4169] kioc->user_data_len = kioc->xferlen [L4170] EXPR mimd.ui.fcs.buffer [L4170] kioc->user_data = (void *)mimd.ui.fcs.buffer [L4171] EXPR kioc->xferlen [L4171] CALL mraid_mm_attach_buf(adp, kioc, (int )kioc->xferlen) [L4261] mm_dmapool_t *pool ; [L4262] int right_pool ; [L4263] unsigned long flags ; [L4264] int i ; [L4265] void *tmp ; [L4267] right_pool = -1 [L4268] kioc->pool_index = -1 [L4269] kioc->buf_vaddr = (caddr_t )0 [L4270] kioc->buf_paddr = 0ULL [L4271] kioc->free_buf = 0U [L4272] i = 0 [L4299] COND TRUE i <= 4 [L4275] pool = (mm_dmapool_t *)(& adp->dma_pool_list) + (unsigned long )i [L4276] EXPR pool->buf_size [L4276] COND TRUE (uint32_t )xferlen > pool->buf_size [L4297] i = i + 1 [L4299] COND TRUE i <= 4 [L4275] pool = (mm_dmapool_t *)(& adp->dma_pool_list) + (unsigned long )i [L4276] EXPR pool->buf_size [L4276] COND TRUE (uint32_t )xferlen > pool->buf_size [L4297] i = i + 1 [L4299] COND TRUE i <= 4 [L4275] pool = (mm_dmapool_t *)(& adp->dma_pool_list) + (unsigned long )i [L4276] EXPR pool->buf_size [L4276] COND TRUE (uint32_t )xferlen > pool->buf_size [L4297] i = i + 1 [L4299] COND TRUE i <= 4 [L4275] pool = (mm_dmapool_t *)(& adp->dma_pool_list) + (unsigned long )i [L4276] EXPR pool->buf_size [L4276] COND TRUE (uint32_t )xferlen > pool->buf_size [L4297] i = i + 1 [L4299] COND TRUE i <= 4 [L4275] pool = (mm_dmapool_t *)(& adp->dma_pool_list) + (unsigned long )i [L4276] EXPR pool->buf_size [L4276] COND FALSE !((uint32_t )xferlen > pool->buf_size) [L4280] COND TRUE right_pool == -1 [L4281] right_pool = i [L4284] CALL ldv_spin_lock() [L5236] ldv_spin = 1 [L4284] RET ldv_spin_lock() [L4285] EXPR pool->in_use [L4285] COND FALSE !((unsigned int )pool->in_use == 0U) [L4293] CALL spin_unlock_irqrestore(& pool->lock, flags) [L5118] CALL ldv_spin_unlock() [L5243] ldv_spin = 0 [L5118] RET ldv_spin_unlock() [L5119] CALL ldv_spin_unlock_irqrestore_8(lock, flags) [L3597] FCALL _raw_spin_unlock_irqrestore(& lock->ldv_6347.rlock, flags) [L5119] RET ldv_spin_unlock_irqrestore_8(lock, flags) [L4293] RET spin_unlock_irqrestore(& pool->lock, flags) [L4297] i = i + 1 [L4299] COND FALSE !(i <= 4) [L4303] COND FALSE !(right_pool == -1) [L4307] pool = (mm_dmapool_t *)(& adp->dma_pool_list) + (unsigned long )right_pool [L4308] CALL ldv_spin_lock() [L5236] ldv_spin = 1 [L4308] RET ldv_spin_lock() [L4309] kioc->pool_index = (int8_t )right_pool [L4310] kioc->free_buf = 1U [L4311] EXPR pool->handle [L4311] CALL ldv_dma_pool_alloc_20(pool->handle, 208U, & kioc->buf_paddr) [L5143] CALL ldv_check_alloc_flags(flags) [L5203] COND FALSE !(ldv_spin == 0 || ! (flags & 16U)) [L5205] CALL ldv_error() [L3694] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 28 procedures, 415 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 635.7s, OverallIterations: 19, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1284 SdHoareTripleChecker+Valid, 14.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1260 mSDsluCounter, 41310 SdHoareTripleChecker+Invalid, 13.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31304 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 650 IncrementalHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 10006 mSDtfsCounter, 650 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6990 GetRequests, 6888 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=593occurred in iteration=18, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 189 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 14.5s SatisfiabilityAnalysisTime, 57.1s InterpolantComputationTime, 3777 NumberOfCodeBlocks, 3280 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6976 ConstructedInterpolants, 0 QuantifiedInterpolants, 7812 SizeOfPredicates, 23 NumberOfNonLiveVariables, 17770 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 36 InterpolantComputations, 28 PerfectInterpolantSequences, 6880/7408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN