./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a6e1397422f061401041ed8290b479ab382edc5aeb84d3f22471688ceb94ba00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:11:50,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:11:50,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:11:51,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:11:51,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:11:51,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:11:51,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:11:51,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:11:51,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:11:51,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:11:51,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:11:51,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:11:51,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:11:51,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:11:51,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:11:51,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:11:51,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:11:51,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:11:51,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:11:51,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:11:51,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:11:51,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:11:51,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:11:51,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:11:51,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:11:51,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:11:51,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:11:51,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:11:51,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:11:51,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:11:51,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:11:51,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:11:51,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:11:51,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:11:51,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:11:51,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:11:51,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:11:51,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:11:51,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:11:51,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:11:51,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:11:51,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:11:51,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:11:51,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:11:51,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:11:51,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:11:51,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:11:51,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:11:51,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:11:51,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:11:51,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:11:51,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:11:51,140 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:11:51,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:11:51,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:11:51,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:11:51,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:11:51,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:11:51,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:11:51,142 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:11:51,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:11:51,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:11:51,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:11:51,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:11:51,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:11:51,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:11:51,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:11:51,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:11:51,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:11:51,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:11:51,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:11:51,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:51,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:11:51,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:11:51,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:11:51,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:11:51,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:11:51,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:11:51,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:11:51,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:11:51,148 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e1397422f061401041ed8290b479ab382edc5aeb84d3f22471688ceb94ba00 [2021-11-23 02:11:51,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:11:51,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:11:51,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:11:51,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:11:51,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:11:51,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:11:51,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/170eca50f/862327733613419fa70b870622d2b965/FLAG2fe53d856 [2021-11-23 02:11:52,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:11:52,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:11:52,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/170eca50f/862327733613419fa70b870622d2b965/FLAG2fe53d856 [2021-11-23 02:11:52,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/170eca50f/862327733613419fa70b870622d2b965 [2021-11-23 02:11:52,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:11:52,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:11:52,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:52,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:11:52,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:11:52,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:52" (1/1) ... [2021-11-23 02:11:52,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4042360a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:52, skipping insertion in model container [2021-11-23 02:11:52,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:52" (1/1) ... [2021-11-23 02:11:52,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:11:53,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:11:57,323 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_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[462027,462040] [2021-11-23 02:11:57,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:57,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:11:58,334 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_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[462027,462040] [2021-11-23 02:11:58,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:58,672 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:11:58,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58 WrapperNode [2021-11-23 02:11:58,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:58,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:58,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:11:58,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:11:58,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:58,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,195 INFO L137 Inliner]: procedures = 493, calls = 3997, calls flagged for inlining = 198, calls inlined = 173, statements flattened = 8165 [2021-11-23 02:11:59,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:59,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:11:59,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:11:59,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:11:59,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:11:59,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:11:59,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:11:59,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:11:59,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (1/1) ... [2021-11-23 02:11:59,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:59,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:59,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:11:59,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:11:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_disable [2021-11-23 02:11:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_disable [2021-11-23 02:11:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_key [2021-11-23 02:11:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_key [2021-11-23 02:11:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_use_fixed_rate_ap [2021-11-23 02:11:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_use_fixed_rate_ap [2021-11-23 02:11:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:11:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:11:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:11:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:11:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fw_mutex_of_mwl8k_priv [2021-11-23 02:11:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fw_mutex_of_mwl8k_priv [2021-11-23 02:11:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_rts_threshold [2021-11-23 02:11:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_rts_threshold [2021-11-23 02:11:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:11:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:11:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:11:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:11:59,930 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_interface [2021-11-23 02:11:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_interface [2021-11-23 02:11:59,930 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:11:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:11:59,930 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:11:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:11:59,931 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:11:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:11:59,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:11:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:11:59,931 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_prepare_multicast [2021-11-23 02:11:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_prepare_multicast [2021-11-23 02:11:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_feed_fw_image [2021-11-23 02:11:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_feed_fw_image [2021-11-23 02:11:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_firmware [2021-11-23 02:11:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_firmware [2021-11-23 02:11:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:11:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:11:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:11:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_enable [2021-11-23 02:11:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_enable [2021-11-23 02:11:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_mgmt [2021-11-23 02:11:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_mgmt [2021-11-23 02:11:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_process [2021-11-23 02:11:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_process [2021-11-23 02:11:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_unlock [2021-11-23 02:11:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_unlock [2021-11-23 02:11:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_stats [2021-11-23 02:11:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_stats [2021-11-23 02:11:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:11:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:11:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:11:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:11:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_configure_filter [2021-11-23 02:11:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_configure_filter [2021-11-23 02:11:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_ht_caps [2021-11-23 02:11:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_ht_caps [2021-11-23 02:11:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_start [2021-11-23 02:11:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_start [2021-11-23 02:11:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_request_fw [2021-11-23 02:11:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_request_fw [2021-11-23 02:11:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:11:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:11:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:11:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:11:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:11:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:11:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:11:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2021-11-23 02:11:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2021-11-23 02:11:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fw_mutex_of_mwl8k_priv [2021-11-23 02:11:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fw_mutex_of_mwl8k_priv [2021-11-23 02:11:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:11:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_firmware [2021-11-23 02:11:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_firmware [2021-11-23 02:11:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_watchdog_ba_events [2021-11-23 02:11:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_watchdog_ba_events [2021-11-23 02:11:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2021-11-23 02:11:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2021-11-23 02:11:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:11:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:11:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:11:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_probe_hw [2021-11-23 02:11:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_probe_hw [2021-11-23 02:11:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure SET_IEEE80211_PERM_ADDR [2021-11-23 02:11:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure SET_IEEE80211_PERM_ADDR [2021-11-23 02:11:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:11:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:11:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_name [2021-11-23 02:11:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_name [2021-11-23 02:11:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx [2021-11-23 02:11:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx [2021-11-23 02:11:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-23 02:11:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-23 02:11:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:11:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:11:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-23 02:11:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-23 02:11:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_start [2021-11-23 02:11:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_start [2021-11-23 02:11:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:11:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:11:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:11:59,956 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:11:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_refill [2021-11-23 02:11:59,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_refill [2021-11-23 02:11:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_caps [2021-11-23 02:11:59,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_caps [2021-11-23 02:11:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 02:11:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 02:11:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:11:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:11:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_wmm_mode [2021-11-23 02:11:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_wmm_mode [2021-11-23 02:11:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:11:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_survey [2021-11-23 02:11:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_survey [2021-11-23 02:11:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 02:11:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 02:11:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:11:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-23 02:11:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-23 02:11:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:11:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:11:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:11:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:11:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:11:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:11:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_stream [2021-11-23 02:11:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_stream [2021-11-23 02:11:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_init [2021-11-23 02:11:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_init [2021-11-23 02:11:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-23 02:11:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-23 02:11:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 02:11:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 02:11:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_control [2021-11-23 02:11:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_control [2021-11-23 02:11:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:11:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:11:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-11-23 02:11:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-11-23 02:11:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_pervif_cmd [2021-11-23 02:11:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_pervif_cmd [2021-11-23 02:11:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:11:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:11:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2021-11-23 02:11:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2021-11-23 02:11:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:11:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:11:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:11:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:11:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_hw_reset [2021-11-23 02:11:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_hw_reset [2021-11-23 02:11:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bss_start [2021-11-23 02:11:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bss_start [2021-11-23 02:11:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:11:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:11:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_get_chandef_type [2021-11-23 02:11:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_get_chandef_type [2021-11-23 02:11:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:11:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:11:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_enable_bsses [2021-11-23 02:11:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_enable_bsses [2021-11-23 02:11:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_interrupt [2021-11-23 02:11:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_interrupt [2021-11-23 02:11:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:11:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:11:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:11:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:11:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-23 02:11:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-23 02:11:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_conf_tx [2021-11-23 02:11:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_conf_tx [2021-11-23 02:11:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_pre_scan [2021-11-23 02:11:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_pre_scan [2021-11-23 02:11:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data [2021-11-23 02:11:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data [2021-11-23 02:11:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_post_scan [2021-11-23 02:11:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_post_scan [2021-11-23 02:11:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_fw_image [2021-11-23 02:11:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_fw_image [2021-11-23 02:11:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_txqs [2021-11-23 02:11:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_txqs [2021-11-23 02:11:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_vif [2021-11-23 02:11:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_vif [2021-11-23 02:11:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:11:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:11:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_hw_restart_work [2021-11-23 02:11:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_hw_restart_work [2021-11-23 02:11:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data_qos [2021-11-23 02:11:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data_qos [2021-11-23 02:11:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2021-11-23 02:11:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2021-11-23 02:11:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:11:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:11:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:11:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:11:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_hdrlen [2021-11-23 02:11:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_hdrlen [2021-11-23 02:11:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_firmware [2021-11-23 02:11:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_firmware [2021-11-23 02:11:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:11:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:11:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_enable_sniffer [2021-11-23 02:11:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_enable_sniffer [2021-11-23 02:11:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:11:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:11:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-23 02:11:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-23 02:11:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 02:11:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 02:11:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bbp_reg_access [2021-11-23 02:11:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bbp_reg_access [2021-11-23 02:11:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:11:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:11:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 02:11:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 02:11:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_rf_antenna [2021-11-23 02:11:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_rf_antenna [2021-11-23 02:11:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:11:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:11:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_reload_firmware [2021-11-23 02:11:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_reload_firmware [2021-11-23 02:11:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:11:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:11:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:11:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:11:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:11:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_channel_to_frequency [2021-11-23 02:11:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_channel_to_frequency [2021-11-23 02:11:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:11:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_dma_header [2021-11-23 02:11:59,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_dma_header [2021-11-23 02:11:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_bss_info_changed [2021-11-23 02:11:59,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_bss_info_changed [2021-11-23 02:11:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_stream [2021-11-23 02:11:59,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_stream [2021-11-23 02:11:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_complete [2021-11-23 02:11:59,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_complete [2021-11-23 02:11:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_reclaim [2021-11-23 02:11:59,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_reclaim [2021-11-23 02:11:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_radio_preamble [2021-11-23 02:11:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_radio_preamble [2021-11-23 02:11:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_config [2021-11-23 02:11:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_config [2021-11-23 02:11:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:11:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2021-11-23 02:12:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2021-11-23 02:12:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-23 02:12:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-23 02:12:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:12:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:12:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-23 02:12:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-23 02:12:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2021-11-23 02:12:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2021-11-23 02:12:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_deinit [2021-11-23 02:12:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_deinit [2021-11-23 02:12:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure rxq_refill [2021-11-23 02:12:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure rxq_refill [2021-11-23 02:12:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_process [2021-11-23 02:12:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_process [2021-11-23 02:12:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_lock [2021-11-23 02:12:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_lock [2021-11-23 02:12:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure __mwl8k_cmd_mac_multicast_adr [2021-11-23 02:12:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __mwl8k_cmd_mac_multicast_adr [2021-11-23 02:12:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_init [2021-11-23 02:12:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_init [2021-11-23 02:12:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:12:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:12:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-23 02:12:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-23 02:12:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_destroy_ba [2021-11-23 02:12:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_destroy_ba [2021-11-23 02:12:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-23 02:12:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-23 02:12:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-23 02:12:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-23 02:12:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_remove [2021-11-23 02:12:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_remove [2021-11-23 02:12:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx_start [2021-11-23 02:12:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx_start [2021-11-23 02:12:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_dma_header [2021-11-23 02:12:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_dma_header [2021-11-23 02:12:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_stop [2021-11-23 02:12:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_stop [2021-11-23 02:12:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_update_mac_addr [2021-11-23 02:12:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_update_mac_addr [2021-11-23 02:12:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:12:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:12:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_finalize_join_worker [2021-11-23 02:12:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_finalize_join_worker [2021-11-23 02:12:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-23 02:12:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-23 02:12:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:12:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-11-23 02:12:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-11-23 02:12:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:12:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:12:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-11-23 02:12:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-11-23 02:12:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:12:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:12:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-11-23 02:12:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-11-23 02:12:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_encryption_set_cmd_info [2021-11-23 02:12:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_encryption_set_cmd_info [2021-11-23 02:12:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:12:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:12:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_add [2021-11-23 02:12:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_add [2021-11-23 02:12:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:12:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:12:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:12:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:12:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_mac_addr [2021-11-23 02:12:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_mac_addr [2021-11-23 02:12:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_interface [2021-11-23 02:12:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_interface [2021-11-23 02:12:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-23 02:12:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-23 02:12:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:12:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:12:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure legacy_rate_mask_to_array [2021-11-23 02:12:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure legacy_rate_mask_to_array [2021-11-23 02:12:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_ampdu_action [2021-11-23 02:12:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_ampdu_action [2021-11-23 02:12:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_refill [2021-11-23 02:12:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_refill [2021-11-23 02:12:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-23 02:12:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-23 02:12:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:12:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:12:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:12:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:12:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_fw [2021-11-23 02:12:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_fw [2021-11-23 02:12:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxq_deinit [2021-11-23 02:12:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxq_deinit [2021-11-23 02:12:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:12:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:12:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:12:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:12:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_send_fw_load_cmd [2021-11-23 02:12:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_send_fw_load_cmd [2021-11-23 02:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:12:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:12:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:12:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_new_stn_del [2021-11-23 02:12:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_new_stn_del [2021-11-23 02:12:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_cmd [2021-11-23 02:12:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_cmd [2021-11-23 02:12:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_lookup_stream [2021-11-23 02:12:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_lookup_stream [2021-11-23 02:12:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-23 02:12:00,027 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-23 02:12:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-23 02:12:00,027 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-23 02:12:01,454 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:12:01,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:12:06,524 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:12:17,604 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:12:20,843 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:12:20,844 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:12:20,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:20 BoogieIcfgContainer [2021-11-23 02:12:20,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:12:20,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:12:20,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:12:20,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:12:20,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:52" (1/3) ... [2021-11-23 02:12:20,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4e4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:20, skipping insertion in model container [2021-11-23 02:12:20,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:58" (2/3) ... [2021-11-23 02:12:20,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4e4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:20, skipping insertion in model container [2021-11-23 02:12:20,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:20" (3/3) ... [2021-11-23 02:12:20,868 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:12:20,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:12:20,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:12:20,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:12:20,976 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=FINITE_AUTOMATA, 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 [2021-11-23 02:12:20,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:12:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 1578 states have (on average 1.349809885931559) internal successors, (2130), 1656 states have internal predecessors, (2130), 765 states have call successors, (765), 171 states have call predecessors, (765), 170 states have return successors, (752), 742 states have call predecessors, (752), 752 states have call successors, (752) [2021-11-23 02:12:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2021-11-23 02:12:21,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:21,115 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:21,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash 199935021, now seen corresponding path program 1 times [2021-11-23 02:12:21,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:21,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581153862] [2021-11-23 02:12:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:21,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:12:22,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:22,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581153862] [2021-11-23 02:12:22,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581153862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:22,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:22,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:22,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536483753] [2021-11-23 02:12:22,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:22,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:22,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:22,755 INFO L87 Difference]: Start difference. First operand has 2515 states, 1578 states have (on average 1.349809885931559) internal successors, (2130), 1656 states have internal predecessors, (2130), 765 states have call successors, (765), 171 states have call predecessors, (765), 170 states have return successors, (752), 742 states have call predecessors, (752), 752 states have call successors, (752) Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2021-11-23 02:12:26,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:32,933 INFO L93 Difference]: Finished difference Result 7246 states and 10810 transitions. [2021-11-23 02:12:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 627 [2021-11-23 02:12:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:33,003 INFO L225 Difference]: With dead ends: 7246 [2021-11-23 02:12:33,004 INFO L226 Difference]: Without dead ends: 4792 [2021-11-23 02:12:33,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:33,042 INFO L933 BasicCegarLoop]: 4111 mSDtfsCounter, 3352 mSDsluCounter, 3626 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 7436 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:33,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3361 Valid, 7436 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 635 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-23 02:12:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2021-11-23 02:12:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4787. [2021-11-23 02:12:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4787 states, 3028 states have (on average 1.3401585204755615) internal successors, (4058), 3148 states have internal predecessors, (4058), 1421 states have call successors, (1421), 338 states have call predecessors, (1421), 337 states have return successors, (1424), 1394 states have call predecessors, (1424), 1415 states have call successors, (1424) [2021-11-23 02:12:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 6903 transitions. [2021-11-23 02:12:33,718 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 6903 transitions. Word has length 627 [2021-11-23 02:12:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:33,726 INFO L470 AbstractCegarLoop]: Abstraction has 4787 states and 6903 transitions. [2021-11-23 02:12:33,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2021-11-23 02:12:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 6903 transitions. [2021-11-23 02:12:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2021-11-23 02:12:33,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:33,751 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:12:33,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -344788347, now seen corresponding path program 1 times [2021-11-23 02:12:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:33,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142060409] [2021-11-23 02:12:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:12:34,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:34,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142060409] [2021-11-23 02:12:34,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142060409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:34,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:34,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:34,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979347480] [2021-11-23 02:12:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:34,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:34,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:34,422 INFO L87 Difference]: Start difference. First operand 4787 states and 6903 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:12:36,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:39,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:45,974 INFO L93 Difference]: Finished difference Result 12504 states and 17872 transitions. [2021-11-23 02:12:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 632 [2021-11-23 02:12:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:46,077 INFO L225 Difference]: With dead ends: 12504 [2021-11-23 02:12:46,077 INFO L226 Difference]: Without dead ends: 7832 [2021-11-23 02:12:46,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:46,113 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 2119 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 7475 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:46,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 7475 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 820 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2021-11-23 02:12:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2021-11-23 02:12:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 7818. [2021-11-23 02:12:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7818 states, 4946 states have (on average 1.3323898099474323) internal successors, (6590), 5132 states have internal predecessors, (6590), 2258 states have call successors, (2258), 614 states have call predecessors, (2258), 613 states have return successors, (2273), 2223 states have call predecessors, (2273), 2252 states have call successors, (2273) [2021-11-23 02:12:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7818 states to 7818 states and 11121 transitions. [2021-11-23 02:12:46,567 INFO L78 Accepts]: Start accepts. Automaton has 7818 states and 11121 transitions. Word has length 632 [2021-11-23 02:12:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:46,570 INFO L470 AbstractCegarLoop]: Abstraction has 7818 states and 11121 transitions. [2021-11-23 02:12:46,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:12:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 7818 states and 11121 transitions. [2021-11-23 02:12:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2021-11-23 02:12:46,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:46,591 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:46,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:12:46,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash 410051054, now seen corresponding path program 1 times [2021-11-23 02:12:46,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:46,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945085747] [2021-11-23 02:12:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:46,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:12:47,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:47,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945085747] [2021-11-23 02:12:47,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945085747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:47,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:47,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:47,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350173089] [2021-11-23 02:12:47,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:47,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:47,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:47,449 INFO L87 Difference]: Start difference. First operand 7818 states and 11121 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:12:49,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:51,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:58,195 INFO L93 Difference]: Finished difference Result 23086 states and 34618 transitions. [2021-11-23 02:12:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 636 [2021-11-23 02:12:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:58,353 INFO L225 Difference]: With dead ends: 23086 [2021-11-23 02:12:58,353 INFO L226 Difference]: Without dead ends: 15383 [2021-11-23 02:12:58,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:58,426 INFO L933 BasicCegarLoop]: 4181 mSDtfsCounter, 3516 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3516 SdHoareTripleChecker+Valid, 7412 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:58,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3516 Valid, 7412 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 629 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-11-23 02:12:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15383 states. [2021-11-23 02:12:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15383 to 15368. [2021-11-23 02:12:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 9751 states have (on average 1.3343246846477284) internal successors, (13011), 10113 states have internal predecessors, (13011), 4411 states have call successors, (4411), 1211 states have call predecessors, (4411), 1205 states have return successors, (5360), 4342 states have call predecessors, (5360), 4404 states have call successors, (5360) [2021-11-23 02:12:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 22782 transitions. [2021-11-23 02:12:59,298 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 22782 transitions. Word has length 636 [2021-11-23 02:12:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:59,300 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 22782 transitions. [2021-11-23 02:12:59,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:12:59,300 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 22782 transitions. [2021-11-23 02:12:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2021-11-23 02:12:59,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:59,322 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:59,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:12:59,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash -53368002, now seen corresponding path program 1 times [2021-11-23 02:12:59,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242014702] [2021-11-23 02:12:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:59,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8362 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8362 trivial. 0 not checked. [2021-11-23 02:13:00,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:00,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242014702] [2021-11-23 02:13:00,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242014702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:00,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:00,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:00,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795018841] [2021-11-23 02:13:00,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:00,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:00,322 INFO L87 Difference]: Start difference. First operand 15368 states and 22782 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:13:02,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:04,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:08,022 INFO L93 Difference]: Finished difference Result 15416 states and 22833 transitions. [2021-11-23 02:13:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 642 [2021-11-23 02:13:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:08,106 INFO L225 Difference]: With dead ends: 15416 [2021-11-23 02:13:08,107 INFO L226 Difference]: Without dead ends: 15413 [2021-11-23 02:13:08,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:08,116 INFO L933 BasicCegarLoop]: 3285 mSDtfsCounter, 3368 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 3380 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:08,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3377 Valid, 3380 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 02:13:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15413 states. [2021-11-23 02:13:08,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15413 to 15410. [2021-11-23 02:13:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15410 states, 9774 states have (on average 1.33353795784735) internal successors, (13034), 10137 states have internal predecessors, (13034), 4413 states have call successors, (4413), 1226 states have call predecessors, (4413), 1222 states have return successors, (5381), 4345 states have call predecessors, (5381), 4407 states have call successors, (5381) [2021-11-23 02:13:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15410 states to 15410 states and 22828 transitions. [2021-11-23 02:13:09,055 INFO L78 Accepts]: Start accepts. Automaton has 15410 states and 22828 transitions. Word has length 642 [2021-11-23 02:13:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:09,057 INFO L470 AbstractCegarLoop]: Abstraction has 15410 states and 22828 transitions. [2021-11-23 02:13:09,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:13:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 15410 states and 22828 transitions. [2021-11-23 02:13:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2021-11-23 02:13:09,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:09,068 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:09,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:13:09,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1655671163, now seen corresponding path program 1 times [2021-11-23 02:13:09,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:09,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625574258] [2021-11-23 02:13:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:09,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8362 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8362 trivial. 0 not checked. [2021-11-23 02:13:09,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625574258] [2021-11-23 02:13:09,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625574258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:09,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:09,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:09,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622311865] [2021-11-23 02:13:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:09,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:09,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:09,864 INFO L87 Difference]: Start difference. First operand 15410 states and 22828 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:13:11,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:14,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:15,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:17,821 INFO L93 Difference]: Finished difference Result 15415 states and 22831 transitions. [2021-11-23 02:13:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 643 [2021-11-23 02:13:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:18,032 INFO L225 Difference]: With dead ends: 15415 [2021-11-23 02:13:18,032 INFO L226 Difference]: Without dead ends: 15412 [2021-11-23 02:13:18,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:18,040 INFO L933 BasicCegarLoop]: 3283 mSDtfsCounter, 3365 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:18,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 3378 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 02:13:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15412 states. [2021-11-23 02:13:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15412 to 15409. [2021-11-23 02:13:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15409 states, 9774 states have (on average 1.3334356455903418) internal successors, (13033), 10136 states have internal predecessors, (13033), 4412 states have call successors, (4412), 1226 states have call predecessors, (4412), 1222 states have return successors, (5381), 4345 states have call predecessors, (5381), 4407 states have call successors, (5381) [2021-11-23 02:13:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15409 states to 15409 states and 22826 transitions. [2021-11-23 02:13:18,833 INFO L78 Accepts]: Start accepts. Automaton has 15409 states and 22826 transitions. Word has length 643 [2021-11-23 02:13:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:18,835 INFO L470 AbstractCegarLoop]: Abstraction has 15409 states and 22826 transitions. [2021-11-23 02:13:18,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:13:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 15409 states and 22826 transitions. [2021-11-23 02:13:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2021-11-23 02:13:18,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:18,843 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:18,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:13:18,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash 212543265, now seen corresponding path program 1 times [2021-11-23 02:13:18,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:18,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211865360] [2021-11-23 02:13:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:18,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8362 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8362 trivial. 0 not checked. [2021-11-23 02:13:19,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211865360] [2021-11-23 02:13:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211865360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:19,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:19,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:19,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093151680] [2021-11-23 02:13:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:19,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:19,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:19,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:19,579 INFO L87 Difference]: Start difference. First operand 15409 states and 22826 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:13:20,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:23,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:25,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:26,755 INFO L93 Difference]: Finished difference Result 15414 states and 22829 transitions. [2021-11-23 02:13:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:26,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 644 [2021-11-23 02:13:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:26,843 INFO L225 Difference]: With dead ends: 15414 [2021-11-23 02:13:26,843 INFO L226 Difference]: Without dead ends: 15406 [2021-11-23 02:13:26,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:26,855 INFO L933 BasicCegarLoop]: 3282 mSDtfsCounter, 3362 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:26,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 3377 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 02:13:26,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15406 states. [2021-11-23 02:13:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15406 to 15403. [2021-11-23 02:13:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15403 states, 9769 states have (on average 1.3330944825468318) internal successors, (13023), 10130 states have internal predecessors, (13023), 4411 states have call successors, (4411), 1226 states have call predecessors, (4411), 1222 states have return successors, (5381), 4345 states have call predecessors, (5381), 4407 states have call successors, (5381) [2021-11-23 02:13:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15403 states to 15403 states and 22815 transitions. [2021-11-23 02:13:27,792 INFO L78 Accepts]: Start accepts. Automaton has 15403 states and 22815 transitions. Word has length 644 [2021-11-23 02:13:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:27,794 INFO L470 AbstractCegarLoop]: Abstraction has 15403 states and 22815 transitions. [2021-11-23 02:13:27,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:13:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 15403 states and 22815 transitions. [2021-11-23 02:13:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2021-11-23 02:13:27,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:27,812 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:27,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:13:27,812 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1154797532, now seen corresponding path program 1 times [2021-11-23 02:13:27,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:27,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473990038] [2021-11-23 02:13:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:27,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7988 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7988 trivial. 0 not checked. [2021-11-23 02:13:28,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473990038] [2021-11-23 02:13:28,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473990038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:28,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:28,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:28,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778863710] [2021-11-23 02:13:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:28,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:28,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:28,432 INFO L87 Difference]: Start difference. First operand 15403 states and 22815 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:13:30,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:32,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:37,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:39,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:43,280 INFO L93 Difference]: Finished difference Result 30693 states and 47021 transitions. [2021-11-23 02:13:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:43,284 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), 3 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 669 [2021-11-23 02:13:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:43,383 INFO L225 Difference]: With dead ends: 30693 [2021-11-23 02:13:43,383 INFO L226 Difference]: Without dead ends: 15405 [2021-11-23 02:13:43,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:43,493 INFO L933 BasicCegarLoop]: 6292 mSDtfsCounter, 3515 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 9611 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:43,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3515 Valid, 9611 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 869 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2021-11-23 02:13:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-23 02:13:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 15394. [2021-11-23 02:13:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15394 states, 9763 states have (on average 1.3319676328997234) internal successors, (13004), 10124 states have internal predecessors, (13004), 4408 states have call successors, (4408), 1223 states have call predecessors, (4408), 1222 states have return successors, (5277), 4345 states have call predecessors, (5277), 4403 states have call successors, (5277) [2021-11-23 02:13:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15394 states to 15394 states and 22689 transitions. [2021-11-23 02:13:44,757 INFO L78 Accepts]: Start accepts. Automaton has 15394 states and 22689 transitions. Word has length 669 [2021-11-23 02:13:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:44,759 INFO L470 AbstractCegarLoop]: Abstraction has 15394 states and 22689 transitions. [2021-11-23 02:13:44,759 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), 3 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:13:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 15394 states and 22689 transitions. [2021-11-23 02:13:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2021-11-23 02:13:44,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:44,773 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:44,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:13:44,774 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:44,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2122195798, now seen corresponding path program 1 times [2021-11-23 02:13:44,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:44,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830256793] [2021-11-23 02:13:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:44,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:13:45,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:45,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830256793] [2021-11-23 02:13:45,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830256793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:45,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:45,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:45,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769723641] [2021-11-23 02:13:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:45,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:45,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:45,583 INFO L87 Difference]: Start difference. First operand 15394 states and 22689 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:13:47,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:49,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:52,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:54,240 INFO L93 Difference]: Finished difference Result 30670 states and 45188 transitions. [2021-11-23 02:13:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:54,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 680 [2021-11-23 02:13:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:54,325 INFO L225 Difference]: With dead ends: 30670 [2021-11-23 02:13:54,325 INFO L226 Difference]: Without dead ends: 15391 [2021-11-23 02:13:54,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:54,387 INFO L933 BasicCegarLoop]: 3279 mSDtfsCounter, 3304 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:54,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 3545 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 02:13:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15391 states. [2021-11-23 02:13:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15391 to 15391. [2021-11-23 02:13:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15391 states, 9762 states have (on average 1.3312845728334357) internal successors, (12996), 10123 states have internal predecessors, (12996), 4402 states have call successors, (4402), 1227 states have call predecessors, (4402), 1226 states have return successors, (5263), 4339 states have call predecessors, (5263), 4397 states have call successors, (5263) [2021-11-23 02:13:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15391 states to 15391 states and 22661 transitions. [2021-11-23 02:13:55,396 INFO L78 Accepts]: Start accepts. Automaton has 15391 states and 22661 transitions. Word has length 680 [2021-11-23 02:13:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:55,397 INFO L470 AbstractCegarLoop]: Abstraction has 15391 states and 22661 transitions. [2021-11-23 02:13:55,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:13:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 15391 states and 22661 transitions. [2021-11-23 02:13:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2021-11-23 02:13:55,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:55,411 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:55,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:13:55,412 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1664720708, now seen corresponding path program 1 times [2021-11-23 02:13:55,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342240250] [2021-11-23 02:13:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:55,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:13:56,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342240250] [2021-11-23 02:13:56,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342240250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:56,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:56,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:56,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592647140] [2021-11-23 02:13:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:56,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:56,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:56,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:56,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:56,031 INFO L87 Difference]: Start difference. First operand 15391 states and 22661 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, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:13:58,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:00,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:03,325 INFO L93 Difference]: Finished difference Result 30638 states and 45108 transitions. [2021-11-23 02:14:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:03,330 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, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 679 [2021-11-23 02:14:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:03,419 INFO L225 Difference]: With dead ends: 30638 [2021-11-23 02:14:03,420 INFO L226 Difference]: Without dead ends: 15375 [2021-11-23 02:14:03,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:03,498 INFO L933 BasicCegarLoop]: 3275 mSDtfsCounter, 3301 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3310 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:03,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3310 Valid, 3541 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 02:14:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15375 states. [2021-11-23 02:14:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15375 to 15375. [2021-11-23 02:14:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15375 states, 9754 states have (on average 1.3307361082632767) internal successors, (12980), 10115 states have internal predecessors, (12980), 4394 states have call successors, (4394), 1227 states have call predecessors, (4394), 1226 states have return successors, (5247), 4331 states have call predecessors, (5247), 4389 states have call successors, (5247) [2021-11-23 02:14:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15375 states to 15375 states and 22621 transitions. [2021-11-23 02:14:04,480 INFO L78 Accepts]: Start accepts. Automaton has 15375 states and 22621 transitions. Word has length 679 [2021-11-23 02:14:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:04,481 INFO L470 AbstractCegarLoop]: Abstraction has 15375 states and 22621 transitions. [2021-11-23 02:14:04,482 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, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:14:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 15375 states and 22621 transitions. [2021-11-23 02:14:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2021-11-23 02:14:04,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:04,495 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:04,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:14:04,496 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1938275525, now seen corresponding path program 1 times [2021-11-23 02:14:04,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:04,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191059368] [2021-11-23 02:14:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:04,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:14:05,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:05,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191059368] [2021-11-23 02:14:05,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191059368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:05,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368908960] [2021-11-23 02:14:05,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:05,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:05,226 INFO L87 Difference]: Start difference. First operand 15375 states and 22621 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:14:07,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:09,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:11,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:13,307 INFO L93 Difference]: Finished difference Result 30606 states and 45028 transitions. [2021-11-23 02:14:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 681 [2021-11-23 02:14:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:13,388 INFO L225 Difference]: With dead ends: 30606 [2021-11-23 02:14:13,388 INFO L226 Difference]: Without dead ends: 15359 [2021-11-23 02:14:13,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:13,459 INFO L933 BasicCegarLoop]: 3271 mSDtfsCounter, 3295 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3304 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:13,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3304 Valid, 3537 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 02:14:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15359 states. [2021-11-23 02:14:14,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15359 to 15359. [2021-11-23 02:14:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15359 states, 9746 states have (on average 1.330186743279294) internal successors, (12964), 10107 states have internal predecessors, (12964), 4386 states have call successors, (4386), 1227 states have call predecessors, (4386), 1226 states have return successors, (5231), 4323 states have call predecessors, (5231), 4381 states have call successors, (5231) [2021-11-23 02:14:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15359 states to 15359 states and 22581 transitions. [2021-11-23 02:14:14,357 INFO L78 Accepts]: Start accepts. Automaton has 15359 states and 22581 transitions. Word has length 681 [2021-11-23 02:14:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:14,358 INFO L470 AbstractCegarLoop]: Abstraction has 15359 states and 22581 transitions. [2021-11-23 02:14:14,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:14:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15359 states and 22581 transitions. [2021-11-23 02:14:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2021-11-23 02:14:14,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:14,370 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:14,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:14:14,371 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1284761427, now seen corresponding path program 1 times [2021-11-23 02:14:14,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:14,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294554967] [2021-11-23 02:14:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:14,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7982 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2021-11-23 02:14:15,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:15,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294554967] [2021-11-23 02:14:15,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294554967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:15,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:15,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:15,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227437733] [2021-11-23 02:14:15,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:15,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:15,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:15,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:15,268 INFO L87 Difference]: Start difference. First operand 15359 states and 22581 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:14:17,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:19,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:23,426 INFO L93 Difference]: Finished difference Result 30274 states and 44476 transitions. [2021-11-23 02:14:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:23,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 678 [2021-11-23 02:14:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:23,501 INFO L225 Difference]: With dead ends: 30274 [2021-11-23 02:14:23,501 INFO L226 Difference]: Without dead ends: 15043 [2021-11-23 02:14:23,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:23,566 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 3246 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:23,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3254 Valid, 3489 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 341 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-23 02:14:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15043 states. [2021-11-23 02:14:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15043 to 15043. [2021-11-23 02:14:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15043 states, 9574 states have (on average 1.3306872780447043) internal successors, (12740), 9915 states have internal predecessors, (12740), 4262 states have call successors, (4262), 1207 states have call predecessors, (4262), 1206 states have return successors, (5067), 4199 states have call predecessors, (5067), 4257 states have call successors, (5067) [2021-11-23 02:14:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15043 states to 15043 states and 22069 transitions. [2021-11-23 02:14:24,454 INFO L78 Accepts]: Start accepts. Automaton has 15043 states and 22069 transitions. Word has length 678 [2021-11-23 02:14:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:24,454 INFO L470 AbstractCegarLoop]: Abstraction has 15043 states and 22069 transitions. [2021-11-23 02:14:24,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:14:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15043 states and 22069 transitions. [2021-11-23 02:14:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2021-11-23 02:14:24,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:24,472 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:24,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:14:24,472 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1046904363, now seen corresponding path program 1 times [2021-11-23 02:14:24,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:24,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864309304] [2021-11-23 02:14:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:24,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8362 trivial. 0 not checked. [2021-11-23 02:14:24,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:24,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864309304] [2021-11-23 02:14:24,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864309304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:24,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:24,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:24,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612650375] [2021-11-23 02:14:24,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:24,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:24,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:24,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:24,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:24,969 INFO L87 Difference]: Start difference. First operand 15043 states and 22069 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2021-11-23 02:14:27,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:29,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:37,788 INFO L93 Difference]: Finished difference Result 32333 states and 47330 transitions. [2021-11-23 02:14:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:37,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 690 [2021-11-23 02:14:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:37,845 INFO L225 Difference]: With dead ends: 32333 [2021-11-23 02:14:37,845 INFO L226 Difference]: Without dead ends: 17418 [2021-11-23 02:14:37,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:37,886 INFO L933 BasicCegarLoop]: 5301 mSDtfsCounter, 3107 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 8507 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:37,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3115 Valid, 8507 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 787 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2021-11-23 02:14:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17418 states. [2021-11-23 02:14:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17418 to 17403. [2021-11-23 02:14:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17403 states, 11082 states have (on average 1.328460566684714) internal successors, (14722), 11458 states have internal predecessors, (14722), 4885 states have call successors, (4885), 1436 states have call predecessors, (4885), 1435 states have return successors, (5816), 4814 states have call predecessors, (5816), 4880 states have call successors, (5816) [2021-11-23 02:14:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17403 states to 17403 states and 25423 transitions. [2021-11-23 02:14:38,845 INFO L78 Accepts]: Start accepts. Automaton has 17403 states and 25423 transitions. Word has length 690 [2021-11-23 02:14:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:38,846 INFO L470 AbstractCegarLoop]: Abstraction has 17403 states and 25423 transitions. [2021-11-23 02:14:38,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2021-11-23 02:14:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 17403 states and 25423 transitions. [2021-11-23 02:14:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2021-11-23 02:14:38,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:38,870 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:38,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:14:38,871 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 6859572, now seen corresponding path program 1 times [2021-11-23 02:14:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:38,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793368605] [2021-11-23 02:14:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:38,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8760 trivial. 0 not checked. [2021-11-23 02:14:39,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793368605] [2021-11-23 02:14:39,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793368605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:39,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:39,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:14:39,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684625477] [2021-11-23 02:14:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:39,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:14:39,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:14:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:14:39,480 INFO L87 Difference]: Start difference. First operand 17403 states and 25423 transitions. Second operand has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (71), 2 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 1 states have call successors, (67) [2021-11-23 02:14:41,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:45,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:50,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:59,851 INFO L93 Difference]: Finished difference Result 34778 states and 51037 transitions. [2021-11-23 02:14:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:14:59,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (71), 2 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 1 states have call successors, (67) Word has length 717 [2021-11-23 02:14:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:00,034 INFO L225 Difference]: With dead ends: 34778 [2021-11-23 02:15:00,034 INFO L226 Difference]: Without dead ends: 17503 [2021-11-23 02:15:00,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:15:00,081 INFO L933 BasicCegarLoop]: 3216 mSDtfsCounter, 58 mSDsluCounter, 17483 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 19208 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:00,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 19208 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1827 Invalid, 2 Unknown, 0 Unchecked, 19.6s Time] [2021-11-23 02:15:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17503 states. [2021-11-23 02:15:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17503 to 17463. [2021-11-23 02:15:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17463 states, 11122 states have (on average 1.3272792663190074) internal successors, (14762), 11498 states have internal predecessors, (14762), 4885 states have call successors, (4885), 1436 states have call predecessors, (4885), 1455 states have return successors, (5870), 4834 states have call predecessors, (5870), 4880 states have call successors, (5870) [2021-11-23 02:15:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17463 states to 17463 states and 25517 transitions. [2021-11-23 02:15:01,025 INFO L78 Accepts]: Start accepts. Automaton has 17463 states and 25517 transitions. Word has length 717 [2021-11-23 02:15:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:01,026 INFO L470 AbstractCegarLoop]: Abstraction has 17463 states and 25517 transitions. [2021-11-23 02:15:01,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (71), 2 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 1 states have call successors, (67) [2021-11-23 02:15:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 17463 states and 25517 transitions. [2021-11-23 02:15:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2021-11-23 02:15:01,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:01,045 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:15:01,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:15:01,046 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:15:01,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -267084086, now seen corresponding path program 1 times [2021-11-23 02:15:01,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:01,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915840940] [2021-11-23 02:15:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:01,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8754 trivial. 0 not checked. [2021-11-23 02:15:01,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:01,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915840940] [2021-11-23 02:15:01,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915840940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:01,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:15:01,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:15:01,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345710918] [2021-11-23 02:15:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:01,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:15:01,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:15:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:15:01,857 INFO L87 Difference]: Start difference. First operand 17463 states and 25517 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:15:03,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:07,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:09,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:11,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:13,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:15,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:22,723 INFO L93 Difference]: Finished difference Result 34009 states and 50389 transitions. [2021-11-23 02:15:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:15:22,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) Word has length 714 [2021-11-23 02:15:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:22,787 INFO L225 Difference]: With dead ends: 34009 [2021-11-23 02:15:22,787 INFO L226 Difference]: Without dead ends: 19398 [2021-11-23 02:15:22,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:15:22,828 INFO L933 BasicCegarLoop]: 3754 mSDtfsCounter, 396 mSDsluCounter, 11723 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 14552 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:22,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 14552 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1259 Invalid, 2 Unknown, 0 Unchecked, 20.0s Time] [2021-11-23 02:15:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19398 states. [2021-11-23 02:15:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19398 to 17479. [2021-11-23 02:15:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17479 states, 11134 states have (on average 1.3269265313454284) internal successors, (14774), 11510 states have internal predecessors, (14774), 4885 states have call successors, (4885), 1436 states have call predecessors, (4885), 1459 states have return successors, (5912), 4838 states have call predecessors, (5912), 4880 states have call successors, (5912) [2021-11-23 02:15:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 25571 transitions. [2021-11-23 02:15:23,876 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 25571 transitions. Word has length 714 [2021-11-23 02:15:23,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:23,877 INFO L470 AbstractCegarLoop]: Abstraction has 17479 states and 25571 transitions. [2021-11-23 02:15:23,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:15:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 25571 transitions. [2021-11-23 02:15:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2021-11-23 02:15:23,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:23,894 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:15:23,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:15:23,894 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:15:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -300195524, now seen corresponding path program 1 times [2021-11-23 02:15:23,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:23,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172658382] [2021-11-23 02:15:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:23,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8011 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8004 trivial. 0 not checked. [2021-11-23 02:15:24,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:24,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172658382] [2021-11-23 02:15:24,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172658382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:24,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:15:24,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 02:15:24,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467468667] [2021-11-23 02:15:24,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:24,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:15:24,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:15:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:15:24,877 INFO L87 Difference]: Start difference. First operand 17479 states and 25571 transitions. Second operand has 11 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 2 states have call successors, (83), 2 states have call predecessors, (83), 5 states have return successors, (74), 6 states have call predecessors, (74), 2 states have call successors, (74) [2021-11-23 02:15:26,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:30,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:38,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:40,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:42,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:44,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:46,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:48,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:55,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:01,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:01,576 INFO L93 Difference]: Finished difference Result 34942 states and 51872 transitions. [2021-11-23 02:16:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:16:01,579 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 2 states have call successors, (83), 2 states have call predecessors, (83), 5 states have return successors, (74), 6 states have call predecessors, (74), 2 states have call successors, (74) Word has length 724 [2021-11-23 02:16:01,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:01,635 INFO L225 Difference]: With dead ends: 34942 [2021-11-23 02:16:01,635 INFO L226 Difference]: Without dead ends: 17591 [2021-11-23 02:16:01,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:16:01,691 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 2 mSDsluCounter, 31747 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32296 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:01,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 32296 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3031 Invalid, 3 Unknown, 0 Unchecked, 35.9s Time] [2021-11-23 02:16:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17591 states. [2021-11-23 02:16:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17591 to 17591. [2021-11-23 02:16:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17591 states, 11200 states have (on average 1.325) internal successors, (14840), 11582 states have internal predecessors, (14840), 4885 states have call successors, (4885), 1436 states have call predecessors, (4885), 1505 states have return successors, (6304), 4878 states have call predecessors, (6304), 4880 states have call successors, (6304) [2021-11-23 02:16:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17591 states to 17591 states and 26029 transitions. [2021-11-23 02:16:02,560 INFO L78 Accepts]: Start accepts. Automaton has 17591 states and 26029 transitions. Word has length 724 [2021-11-23 02:16:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:02,564 INFO L470 AbstractCegarLoop]: Abstraction has 17591 states and 26029 transitions. [2021-11-23 02:16:02,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 2 states have call successors, (83), 2 states have call predecessors, (83), 5 states have return successors, (74), 6 states have call predecessors, (74), 2 states have call successors, (74) [2021-11-23 02:16:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 17591 states and 26029 transitions. [2021-11-23 02:16:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2021-11-23 02:16:02,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:02,590 INFO L514 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 40, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:02,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:16:02,591 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:02,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -439380013, now seen corresponding path program 1 times [2021-11-23 02:16:02,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:02,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264454756] [2021-11-23 02:16:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:02,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8840 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8834 trivial. 0 not checked. [2021-11-23 02:16:03,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:03,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264454756] [2021-11-23 02:16:03,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264454756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:03,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:03,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:16:03,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794892215] [2021-11-23 02:16:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:03,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:03,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:03,282 INFO L87 Difference]: Start difference. First operand 17591 states and 26029 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2021-11-23 02:16:05,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:08,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:13,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:16,982 INFO L93 Difference]: Finished difference Result 40909 states and 60865 transitions. [2021-11-23 02:16:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 719 [2021-11-23 02:16:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:17,069 INFO L225 Difference]: With dead ends: 40909 [2021-11-23 02:16:17,069 INFO L226 Difference]: Without dead ends: 26194 [2021-11-23 02:16:17,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:17,114 INFO L933 BasicCegarLoop]: 4736 mSDtfsCounter, 3124 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 72 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3132 SdHoareTripleChecker+Valid, 7799 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:17,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3132 Valid, 7799 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 833 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-23 02:16:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26194 states. [2021-11-23 02:16:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26194 to 26133. [2021-11-23 02:16:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26133 states, 16700 states have (on average 1.3252095808383233) internal successors, (22131), 17294 states have internal predecessors, (22131), 7259 states have call successors, (7259), 2076 states have call predecessors, (7259), 2173 states have return successors, (9372), 7228 states have call predecessors, (9372), 7254 states have call successors, (9372) [2021-11-23 02:16:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26133 states to 26133 states and 38762 transitions. [2021-11-23 02:16:18,478 INFO L78 Accepts]: Start accepts. Automaton has 26133 states and 38762 transitions. Word has length 719 [2021-11-23 02:16:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:18,479 INFO L470 AbstractCegarLoop]: Abstraction has 26133 states and 38762 transitions. [2021-11-23 02:16:18,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2021-11-23 02:16:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 26133 states and 38762 transitions. [2021-11-23 02:16:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2021-11-23 02:16:18,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:18,504 INFO L514 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 40, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:18,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:16:18,504 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -92287647, now seen corresponding path program 1 times [2021-11-23 02:16:18,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:18,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257894552] [2021-11-23 02:16:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:18,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8840 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 8760 trivial. 0 not checked. [2021-11-23 02:16:19,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257894552] [2021-11-23 02:16:19,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257894552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944055210] [2021-11-23 02:16:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:19,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:19,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:19,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:16:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:23,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 7239 conjuncts, 324 conjunts are in the unsatisfiable core [2021-11-23 02:16:23,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:24,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:16:24,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-23 02:16:24,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:27,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-23 02:16:27,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-23 02:16:27,309 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-23 02:16:27,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 02:16:27,342 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:16:27,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-11-23 02:16:27,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:27,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-23 02:16:27,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-23 02:16:27,817 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 02:16:27,817 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 5 case distinctions, treesize of input 45 treesize of output 56 [2021-11-23 02:16:27,855 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-23 02:16:27,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-23 02:16:28,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:28,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:16:28,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-11-23 02:16:28,559 INFO L354 Elim1Store]: treesize reduction 69, result has 18.8 percent of original size [2021-11-23 02:16:28,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 72 [2021-11-23 02:16:28,654 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-23 02:16:28,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 63 treesize of output 81 [2021-11-23 02:16:29,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:29,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-23 02:16:29,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-23 02:16:29,460 INFO L354 Elim1Store]: treesize reduction 108, result has 16.3 percent of original size [2021-11-23 02:16:29,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 98 [2021-11-23 02:16:29,582 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-23 02:16:29,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 86 treesize of output 111 [2021-11-23 02:16:30,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:30,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:16:30,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-11-23 02:16:30,667 INFO L354 Elim1Store]: treesize reduction 170, result has 21.3 percent of original size [2021-11-23 02:16:30,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 114 treesize of output 146 [2021-11-23 02:16:30,767 INFO L354 Elim1Store]: treesize reduction 155, result has 14.4 percent of original size [2021-11-23 02:16:30,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 128 treesize of output 142 [2021-11-23 02:16:31,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:31,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-23 02:16:31,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-23 02:16:32,176 INFO L354 Elim1Store]: treesize reduction 228, result has 19.4 percent of original size [2021-11-23 02:16:32,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 145 treesize of output 184 [2021-11-23 02:16:32,303 INFO L354 Elim1Store]: treesize reduction 210, result has 12.9 percent of original size [2021-11-23 02:16:32,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 163 treesize of output 180 [2021-11-23 02:16:33,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:33,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:16:33,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-11-23 02:16:34,255 INFO L354 Elim1Store]: treesize reduction 294, result has 17.9 percent of original size [2021-11-23 02:16:34,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 180 treesize of output 226 [2021-11-23 02:16:34,410 INFO L354 Elim1Store]: treesize reduction 273, result has 11.7 percent of original size [2021-11-23 02:16:34,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 202 treesize of output 222 [2021-11-23 02:16:38,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:38,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-23 02:16:38,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-23 02:16:39,168 INFO L354 Elim1Store]: treesize reduction 368, result has 16.6 percent of original size [2021-11-23 02:16:39,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 219 treesize of output 272 [2021-11-23 02:16:39,333 INFO L354 Elim1Store]: treesize reduction 344, result has 10.6 percent of original size [2021-11-23 02:16:39,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 245 treesize of output 268 [2021-11-23 02:17:09,656 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-23 02:17:09,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-23 02:17:09,661 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/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") [2021-11-23 02:17:09,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1644814661] [2021-11-23 02:17:09,717 INFO L159 IcfgInterpreter]: Started Sifa with 209 locations of interest [2021-11-23 02:17:09,717 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:09,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:09,729 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:09,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:11,174 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:267) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) 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) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 45 more [2021-11-23 02:17:11,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:17:11,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-23 02:17:11,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838694844] [2021-11-23 02:17:11,179 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:17:11,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:17:11,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:17:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=586, Unknown=1, NotChecked=0, Total=702 [2021-11-23 02:17:11,181 INFO L87 Difference]: Start difference. First operand 26133 states and 38762 transitions. Second operand has 6 states, 4 states have (on average 33.5) internal successors, (134), 6 states have internal predecessors, (134), 3 states have call successors, (71), 2 states have call predecessors, (71), 3 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-23 02:17:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:17:11,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 244 SyntacticMatches, 24 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=115, Invalid=586, Unknown=1, NotChecked=0, Total=702 [2021-11-23 02:17:11,184 INFO L933 BasicCegarLoop]: 0 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, 0 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 [2021-11-23 02:17:11,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:17:11,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:17:11,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 02:17:11,398 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@7683f420 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:360) 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:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) 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$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$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) [2021-11-23 02:17:11,402 INFO L158 Benchmark]: Toolchain (without parser) took 318525.36ms. Allocated memory was 83.9MB in the beginning and 4.3GB in the end (delta: 4.2GB). Free memory was 47.9MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2021-11-23 02:17:11,402 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 56.5MB in the end (delta: 22.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:17:11,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5798.50ms. Allocated memory was 83.9MB in the beginning and 230.7MB in the end (delta: 146.8MB). Free memory was 47.5MB in the beginning and 132.4MB in the end (delta: -84.9MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2021-11-23 02:17:11,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 519.02ms. Allocated memory is still 230.7MB. Free memory was 132.4MB in the beginning and 119.2MB in the end (delta: 13.2MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2021-11-23 02:17:11,403 INFO L158 Benchmark]: Boogie Preprocessor took 556.71ms. Allocated memory is still 230.7MB. Free memory was 119.2MB in the beginning and 88.6MB in the end (delta: 30.6MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2021-11-23 02:17:11,404 INFO L158 Benchmark]: RCFGBuilder took 21097.20ms. Allocated memory was 230.7MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 88.6MB in the beginning and 996.7MB in the end (delta: -908.0MB). Peak memory consumption was 660.1MB. Max. memory is 16.1GB. [2021-11-23 02:17:11,404 INFO L158 Benchmark]: TraceAbstraction took 290547.96ms. Allocated memory was 1.5GB in the beginning and 4.3GB in the end (delta: 2.8GB). Free memory was 995.6MB in the beginning and 2.7GB in the end (delta: -1.7GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-23 02:17:11,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 56.5MB in the end (delta: 22.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5798.50ms. Allocated memory was 83.9MB in the beginning and 230.7MB in the end (delta: 146.8MB). Free memory was 47.5MB in the beginning and 132.4MB in the end (delta: -84.9MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 519.02ms. Allocated memory is still 230.7MB. Free memory was 132.4MB in the beginning and 119.2MB in the end (delta: 13.2MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 556.71ms. Allocated memory is still 230.7MB. Free memory was 119.2MB in the beginning and 88.6MB in the end (delta: 30.6MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. * RCFGBuilder took 21097.20ms. Allocated memory was 230.7MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 88.6MB in the beginning and 996.7MB in the end (delta: -908.0MB). Peak memory consumption was 660.1MB. Max. memory is 16.1GB. * TraceAbstraction took 290547.96ms. Allocated memory was 1.5GB in the beginning and 4.3GB in the end (delta: 2.8GB). Free memory was 995.6MB in the beginning and 2.7GB in the end (delta: -1.7GB). Peak memory consumption was 1.1GB. 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@7683f420 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@7683f420: 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_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a6e1397422f061401041ed8290b479ab382edc5aeb84d3f22471688ceb94ba00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:17:13,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:17:13,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:17:13,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:17:13,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:17:13,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:17:13,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:17:13,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:17:13,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:17:13,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:17:13,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:17:13,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:17:13,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:17:13,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:17:13,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:17:13,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:17:13,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:17:13,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:17:13,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:17:13,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:17:13,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:17:13,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:17:13,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:17:13,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:17:13,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:17:13,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:17:13,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:17:13,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:17:13,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:17:13,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:17:13,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:17:13,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:17:13,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:17:13,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:17:13,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:17:13,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:17:13,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:17:13,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:17:13,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:17:13,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:17:13,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:17:13,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-23 02:17:13,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:17:13,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:17:13,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:17:13,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:17:13,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:17:13,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:17:13,970 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:17:13,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:17:13,970 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:17:13,970 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:17:13,971 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:17:13,972 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:17:13,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:17:13,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:17:13,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:17:13,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:17:13,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:17:13,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:17:13,975 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:17:13,975 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:17:13,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:17:13,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:17:13,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:17:13,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:17:13,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:17:13,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:17:13,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:13,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:17:13,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:17:13,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:17:13,978 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:17:13,978 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:17:13,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:17:13,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:17:13,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:17:13,979 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_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e1397422f061401041ed8290b479ab382edc5aeb84d3f22471688ceb94ba00 [2021-11-23 02:17:14,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:17:14,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:17:14,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:17:14,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:17:14,381 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:17:14,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:17:14,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/68d3fec40/e86b0add3b8c4feba03a8859949f554f/FLAGaba0c9482 [2021-11-23 02:17:15,597 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:17:15,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:17:15,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/68d3fec40/e86b0add3b8c4feba03a8859949f554f/FLAGaba0c9482 [2021-11-23 02:17:15,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/data/68d3fec40/e86b0add3b8c4feba03a8859949f554f [2021-11-23 02:17:15,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:17:15,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:17:15,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:17:15,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:17:15,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:17:15,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:15" (1/1) ... [2021-11-23 02:17:15,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d57e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:15, skipping insertion in model container [2021-11-23 02:17:15,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:15" (1/1) ... [2021-11-23 02:17:15,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:17:16,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:17:20,296 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_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[462027,462040] [2021-11-23 02:17:20,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:20,676 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:17:20,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:17:21,467 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_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[462027,462040] [2021-11-23 02:17:21,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:21,526 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:17:22,113 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_a885a345-5126-4201-a4d4-ae807218fbb0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[462027,462040] [2021-11-23 02:17:22,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:22,380 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:17:22,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22 WrapperNode [2021-11-23 02:17:22,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:17:22,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:17:22,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:17:22,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:17:22,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:22,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:22,795 INFO L137 Inliner]: procedures = 508, calls = 3997, calls flagged for inlining = 198, calls inlined = 173, statements flattened = 7914 [2021-11-23 02:17:22,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:17:22,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:17:22,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:17:22,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:17:22,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:22,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:22,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:22,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:23,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:23,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:23,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:23,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:17:23,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:17:23,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:17:23,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:17:23,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (1/1) ... [2021-11-23 02:17:23,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:23,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:23,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:17:23,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:17:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_disable [2021-11-23 02:17:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_disable [2021-11-23 02:17:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_key [2021-11-23 02:17:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_key [2021-11-23 02:17:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_use_fixed_rate_ap [2021-11-23 02:17:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_use_fixed_rate_ap [2021-11-23 02:17:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:17:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:17:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:17:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:17:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fw_mutex_of_mwl8k_priv [2021-11-23 02:17:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fw_mutex_of_mwl8k_priv [2021-11-23 02:17:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_rts_threshold [2021-11-23 02:17:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_rts_threshold [2021-11-23 02:17:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:17:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:17:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:17:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:17:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_interface [2021-11-23 02:17:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_interface [2021-11-23 02:17:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:17:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:17:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:17:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:17:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:17:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:17:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:17:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:17:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_prepare_multicast [2021-11-23 02:17:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_prepare_multicast [2021-11-23 02:17:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_feed_fw_image [2021-11-23 02:17:23,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_feed_fw_image [2021-11-23 02:17:23,650 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_firmware [2021-11-23 02:17:23,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_firmware [2021-11-23 02:17:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:17:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:17:23,651 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:17:23,651 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_enable [2021-11-23 02:17:23,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_enable [2021-11-23 02:17:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_mgmt [2021-11-23 02:17:23,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_mgmt [2021-11-23 02:17:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_process [2021-11-23 02:17:23,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_process [2021-11-23 02:17:23,652 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_unlock [2021-11-23 02:17:23,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_unlock [2021-11-23 02:17:23,653 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_stats [2021-11-23 02:17:23,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_stats [2021-11-23 02:17:23,654 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:17:23,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:17:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:17:23,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-23 02:17:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:17:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 02:17:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-23 02:17:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:17:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:17:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:17:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:17:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_configure_filter [2021-11-23 02:17:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_configure_filter [2021-11-23 02:17:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_ht_caps [2021-11-23 02:17:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_ht_caps [2021-11-23 02:17:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_start [2021-11-23 02:17:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_start [2021-11-23 02:17:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_request_fw [2021-11-23 02:17:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_request_fw [2021-11-23 02:17:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:17:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:17:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:17:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:17:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:17:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:17:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2021-11-23 02:17:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2021-11-23 02:17:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fw_mutex_of_mwl8k_priv [2021-11-23 02:17:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fw_mutex_of_mwl8k_priv [2021-11-23 02:17:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_firmware [2021-11-23 02:17:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_firmware [2021-11-23 02:17:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_watchdog_ba_events [2021-11-23 02:17:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_watchdog_ba_events [2021-11-23 02:17:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2021-11-23 02:17:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2021-11-23 02:17:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:17:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:17:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_probe_hw [2021-11-23 02:17:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_probe_hw [2021-11-23 02:17:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure SET_IEEE80211_PERM_ADDR [2021-11-23 02:17:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure SET_IEEE80211_PERM_ADDR [2021-11-23 02:17:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:17:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:17:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_name [2021-11-23 02:17:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_name [2021-11-23 02:17:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx [2021-11-23 02:17:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx [2021-11-23 02:17:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-23 02:17:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-23 02:17:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:17:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:17:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-23 02:17:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-23 02:17:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_start [2021-11-23 02:17:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_start [2021-11-23 02:17:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:17:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:17:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:17:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:17:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_refill [2021-11-23 02:17:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_refill [2021-11-23 02:17:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_caps [2021-11-23 02:17:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_caps [2021-11-23 02:17:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 02:17:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 02:17:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:17:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:17:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_wmm_mode [2021-11-23 02:17:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_wmm_mode [2021-11-23 02:17:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:17:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_survey [2021-11-23 02:17:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_survey [2021-11-23 02:17:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 02:17:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 02:17:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:17:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-23 02:17:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-23 02:17:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:17:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:17:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:17:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:17:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:17:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:17:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-23 02:17:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-23 02:17:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_stream [2021-11-23 02:17:23,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_stream [2021-11-23 02:17:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-23 02:17:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_init [2021-11-23 02:17:23,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_init [2021-11-23 02:17:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-23 02:17:23,672 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-23 02:17:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 02:17:23,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 02:17:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_control [2021-11-23 02:17:23,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_control [2021-11-23 02:17:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:17:23,673 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:17:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-11-23 02:17:23,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-11-23 02:17:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_pervif_cmd [2021-11-23 02:17:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_pervif_cmd [2021-11-23 02:17:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-23 02:17:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:17:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:17:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2021-11-23 02:17:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2021-11-23 02:17:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:17:23,675 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:17:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:17:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:17:23,675 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:17:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_hw_reset [2021-11-23 02:17:23,675 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_hw_reset [2021-11-23 02:17:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 02:17:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bss_start [2021-11-23 02:17:23,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bss_start [2021-11-23 02:17:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:17:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:17:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-23 02:17:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:17:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_get_chandef_type [2021-11-23 02:17:23,677 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_get_chandef_type [2021-11-23 02:17:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:17:23,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:17:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_enable_bsses [2021-11-23 02:17:23,677 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_enable_bsses [2021-11-23 02:17:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_interrupt [2021-11-23 02:17:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_interrupt [2021-11-23 02:17:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:17:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:17:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:17:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:17:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-23 02:17:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-23 02:17:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_conf_tx [2021-11-23 02:17:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_conf_tx [2021-11-23 02:17:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_pre_scan [2021-11-23 02:17:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_pre_scan [2021-11-23 02:17:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data [2021-11-23 02:17:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data [2021-11-23 02:17:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_post_scan [2021-11-23 02:17:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_post_scan [2021-11-23 02:17:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_fw_image [2021-11-23 02:17:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_fw_image [2021-11-23 02:17:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_txqs [2021-11-23 02:17:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_txqs [2021-11-23 02:17:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_vif [2021-11-23 02:17:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_vif [2021-11-23 02:17:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:17:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:17:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_hw_restart_work [2021-11-23 02:17:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_hw_restart_work [2021-11-23 02:17:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data_qos [2021-11-23 02:17:23,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data_qos [2021-11-23 02:17:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2021-11-23 02:17:23,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2021-11-23 02:17:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:17:23,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:17:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:17:23,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:17:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_hdrlen [2021-11-23 02:17:23,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_hdrlen [2021-11-23 02:17:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_firmware [2021-11-23 02:17:23,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_firmware [2021-11-23 02:17:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:17:23,683 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:17:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_enable_sniffer [2021-11-23 02:17:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_enable_sniffer [2021-11-23 02:17:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:17:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:17:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-23 02:17:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-23 02:17:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 02:17:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 02:17:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bbp_reg_access [2021-11-23 02:17:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bbp_reg_access [2021-11-23 02:17:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:17:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:17:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 02:17:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 02:17:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_rf_antenna [2021-11-23 02:17:23,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_rf_antenna [2021-11-23 02:17:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:17:23,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:17:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_reload_firmware [2021-11-23 02:17:23,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_reload_firmware [2021-11-23 02:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:17:23,687 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:17:23,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:17:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_channel_to_frequency [2021-11-23 02:17:23,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_channel_to_frequency [2021-11-23 02:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_dma_header [2021-11-23 02:17:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_dma_header [2021-11-23 02:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_bss_info_changed [2021-11-23 02:17:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_bss_info_changed [2021-11-23 02:17:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_stream [2021-11-23 02:17:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_stream [2021-11-23 02:17:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_complete [2021-11-23 02:17:23,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_complete [2021-11-23 02:17:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_reclaim [2021-11-23 02:17:23,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_reclaim [2021-11-23 02:17:23,689 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_radio_preamble [2021-11-23 02:17:23,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_radio_preamble [2021-11-23 02:17:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-23 02:17:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 02:17:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-23 02:17:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_config [2021-11-23 02:17:23,690 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_config [2021-11-23 02:17:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:17:23,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:17:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2021-11-23 02:17:23,691 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2021-11-23 02:17:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-23 02:17:23,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-23 02:17:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:17:23,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:17:23,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-23 02:17:23,692 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-23 02:17:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2021-11-23 02:17:23,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2021-11-23 02:17:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_deinit [2021-11-23 02:17:23,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_deinit [2021-11-23 02:17:23,692 INFO L130 BoogieDeclarations]: Found specification of procedure rxq_refill [2021-11-23 02:17:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure rxq_refill [2021-11-23 02:17:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_process [2021-11-23 02:17:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_process [2021-11-23 02:17:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_lock [2021-11-23 02:17:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_lock [2021-11-23 02:17:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure __mwl8k_cmd_mac_multicast_adr [2021-11-23 02:17:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __mwl8k_cmd_mac_multicast_adr [2021-11-23 02:17:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_init [2021-11-23 02:17:23,694 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_init [2021-11-23 02:17:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:17:23,694 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:17:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-23 02:17:23,694 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-23 02:17:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_destroy_ba [2021-11-23 02:17:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_destroy_ba [2021-11-23 02:17:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-23 02:17:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-23 02:17:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-23 02:17:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-23 02:17:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_remove [2021-11-23 02:17:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_remove [2021-11-23 02:17:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx_start [2021-11-23 02:17:23,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx_start [2021-11-23 02:17:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_dma_header [2021-11-23 02:17:23,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_dma_header [2021-11-23 02:17:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_stop [2021-11-23 02:17:23,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_stop [2021-11-23 02:17:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_update_mac_addr [2021-11-23 02:17:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_update_mac_addr [2021-11-23 02:17:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:17:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:17:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_finalize_join_worker [2021-11-23 02:17:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_finalize_join_worker [2021-11-23 02:17:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-23 02:17:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-23 02:17:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-11-23 02:17:23,698 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-11-23 02:17:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-23 02:17:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-23 02:17:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-23 02:17:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-23 02:17:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:17:23,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:17:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-11-23 02:17:23,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-11-23 02:17:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:17:23,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:17:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-11-23 02:17:23,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-11-23 02:17:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_encryption_set_cmd_info [2021-11-23 02:17:23,700 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_encryption_set_cmd_info [2021-11-23 02:17:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:17:23,700 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:17:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_add [2021-11-23 02:17:23,700 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_add [2021-11-23 02:17:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:17:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:17:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:17:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:17:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_mac_addr [2021-11-23 02:17:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_mac_addr [2021-11-23 02:17:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_interface [2021-11-23 02:17:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_interface [2021-11-23 02:17:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-23 02:17:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-23 02:17:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:17:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:17:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure legacy_rate_mask_to_array [2021-11-23 02:17:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure legacy_rate_mask_to_array [2021-11-23 02:17:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_ampdu_action [2021-11-23 02:17:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_ampdu_action [2021-11-23 02:17:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_refill [2021-11-23 02:17:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_refill [2021-11-23 02:17:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-23 02:17:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-23 02:17:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:17:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:17:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:17:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:17:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_fw [2021-11-23 02:17:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_fw [2021-11-23 02:17:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxq_deinit [2021-11-23 02:17:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxq_deinit [2021-11-23 02:17:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:17:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:17:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:17:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:17:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_send_fw_load_cmd [2021-11-23 02:17:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_send_fw_load_cmd [2021-11-23 02:17:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:17:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:17:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_new_stn_del [2021-11-23 02:17:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_new_stn_del [2021-11-23 02:17:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_cmd [2021-11-23 02:17:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_cmd [2021-11-23 02:17:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_lookup_stream [2021-11-23 02:17:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_lookup_stream [2021-11-23 02:17:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-23 02:17:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-23 02:17:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-23 02:17:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-23 02:17:24,882 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:17:24,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:17:28,508 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:19:17,111 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:19:17,148 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:19:17,149 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:19:17,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:17 BoogieIcfgContainer [2021-11-23 02:19:17,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:19:17,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:19:17,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:19:17,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:19:17,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:17:15" (1/3) ... [2021-11-23 02:19:17,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185c0b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:17, skipping insertion in model container [2021-11-23 02:19:17,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:22" (2/3) ... [2021-11-23 02:19:17,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185c0b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:17, skipping insertion in model container [2021-11-23 02:19:17,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:17" (3/3) ... [2021-11-23 02:19:17,165 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:19:17,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:19:17,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:19:17,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:19:17,247 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=FINITE_AUTOMATA, 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 [2021-11-23 02:19:17,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:19:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 3164 states, 2227 states have (on average 1.381679389312977) internal successors, (3077), 2305 states have internal predecessors, (3077), 765 states have call successors, (765), 171 states have call predecessors, (765), 170 states have return successors, (752), 742 states have call predecessors, (752), 752 states have call successors, (752) [2021-11-23 02:19:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-11-23 02:19:17,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:17,378 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:17,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1718265276, now seen corresponding path program 1 times [2021-11-23 02:19:17,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:19:17,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003358027] [2021-11-23 02:19:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:17,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:19:17,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:19:17,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:19:17,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:19:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 5080 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:19:22,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:19:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11066 backedges. 4073 proven. 0 refuted. 0 times theorem prover too weak. 6993 trivial. 0 not checked. [2021-11-23 02:19:29,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:19:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11066 backedges. 50 proven. 135 refuted. 0 times theorem prover too weak. 10881 trivial. 0 not checked. [2021-11-23 02:19:32,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:19:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003358027] [2021-11-23 02:19:32,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003358027] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:19:32,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:19:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-23 02:19:32,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988428077] [2021-11-23 02:19:32,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:32,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:19:32,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:19:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:19:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:19:32,387 INFO L87 Difference]: Start difference. First operand has 3164 states, 2227 states have (on average 1.381679389312977) internal successors, (3077), 2305 states have internal predecessors, (3077), 765 states have call successors, (765), 171 states have call predecessors, (765), 170 states have return successors, (752), 742 states have call predecessors, (752), 752 states have call successors, (752) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:19:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:32,684 INFO L93 Difference]: Finished difference Result 6323 states and 9470 transitions. [2021-11-23 02:19:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:19:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 821 [2021-11-23 02:19:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:32,725 INFO L225 Difference]: With dead ends: 6323 [2021-11-23 02:19:32,726 INFO L226 Difference]: Without dead ends: 3132 [2021-11-23 02:19:32,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1640 GetRequests, 1640 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:19:32,760 INFO L933 BasicCegarLoop]: 4585 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, 4585 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 [2021-11-23 02:19:32,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4585 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:19:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2021-11-23 02:19:32,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3132. [2021-11-23 02:19:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2210 states have (on average 1.371945701357466) internal successors, (3032), 2273 states have internal predecessors, (3032), 752 states have call successors, (752), 170 states have call predecessors, (752), 169 states have return successors, (746), 736 states have call predecessors, (746), 746 states have call successors, (746) [2021-11-23 02:19:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4530 transitions. [2021-11-23 02:19:33,004 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4530 transitions. Word has length 821 [2021-11-23 02:19:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:33,005 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 4530 transitions. [2021-11-23 02:19:33,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:19:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4530 transitions. [2021-11-23 02:19:33,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-11-23 02:19:33,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:33,117 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:33,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:19:33,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:19:33,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:33,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -787324040, now seen corresponding path program 1 times [2021-11-23 02:19:33,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:19:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233567334] [2021-11-23 02:19:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:33,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:19:33,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:19:33,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:19:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:19:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:37,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 5080 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:19:37,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:19:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11066 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10922 trivial. 0 not checked. [2021-11-23 02:19:41,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:19:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11066 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10954 trivial. 0 not checked. [2021-11-23 02:19:44,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:19:44,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233567334] [2021-11-23 02:19:44,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233567334] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:19:44,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:19:44,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-23 02:19:44,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976795180] [2021-11-23 02:19:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:44,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:19:44,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:19:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:19:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:19:44,929 INFO L87 Difference]: Start difference. First operand 3132 states and 4530 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-23 02:19:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:47,460 INFO L93 Difference]: Finished difference Result 6190 states and 9012 transitions. [2021-11-23 02:19:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:19:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 821 [2021-11-23 02:19:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:47,496 INFO L225 Difference]: With dead ends: 6190 [2021-11-23 02:19:47,497 INFO L226 Difference]: Without dead ends: 3135 [2021-11-23 02:19:47,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1642 GetRequests, 1633 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:19:47,521 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 6 mSDsluCounter, 17987 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22496 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:47,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 22496 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:19:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2021-11-23 02:19:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3135. [2021-11-23 02:19:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2212 states have (on average 1.3720614828209765) internal successors, (3035), 2276 states have internal predecessors, (3035), 752 states have call successors, (752), 170 states have call predecessors, (752), 170 states have return successors, (747), 736 states have call predecessors, (747), 746 states have call successors, (747) [2021-11-23 02:19:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4534 transitions. [2021-11-23 02:19:47,679 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4534 transitions. Word has length 821 [2021-11-23 02:19:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:47,683 INFO L470 AbstractCegarLoop]: Abstraction has 3135 states and 4534 transitions. [2021-11-23 02:19:47,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-23 02:19:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4534 transitions. [2021-11-23 02:19:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2021-11-23 02:19:47,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:47,696 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:47,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:19:47,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:19:47,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1677627273, now seen corresponding path program 1 times [2021-11-23 02:19:47,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:19:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561260783] [2021-11-23 02:19:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:47,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:19:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:19:47,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:19:47,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:19:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 5165 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:19:52,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:19:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:19:56,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:20:00,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:20:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561260783] [2021-11-23 02:20:00,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561260783] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:20:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1888615930] [2021-11-23 02:20:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:00,728 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:20:00,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:20:00,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:20:00,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-23 02:20:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:03,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 5165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:20:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:20:21,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:20:25,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1888615930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:20:25,657 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:20:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-23 02:20:25,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281019996] [2021-11-23 02:20:25,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:20:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:20:25,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:20:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:20:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:20:25,661 INFO L87 Difference]: Start difference. First operand 3135 states and 4534 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:20:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:26,088 INFO L93 Difference]: Finished difference Result 9064 states and 13700 transitions. [2021-11-23 02:20:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:20:26,088 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), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 838 [2021-11-23 02:20:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:26,157 INFO L225 Difference]: With dead ends: 9064 [2021-11-23 02:20:26,157 INFO L226 Difference]: Without dead ends: 6050 [2021-11-23 02:20:26,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3348 GetRequests, 3338 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:20:26,193 INFO L933 BasicCegarLoop]: 5465 mSDtfsCounter, 4362 mSDsluCounter, 4461 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 9926 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:26,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4362 Valid, 9926 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:20:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2021-11-23 02:20:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6047. [2021-11-23 02:20:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6047 states, 4295 states have (on average 1.3774155995343422) internal successors, (5916), 4416 states have internal predecessors, (5916), 1417 states have call successors, (1417), 335 states have call predecessors, (1417), 334 states have return successors, (1716), 1389 states have call predecessors, (1716), 1410 states have call successors, (1716) [2021-11-23 02:20:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 9049 transitions. [2021-11-23 02:20:26,578 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 9049 transitions. Word has length 838 [2021-11-23 02:20:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:26,581 INFO L470 AbstractCegarLoop]: Abstraction has 6047 states and 9049 transitions. [2021-11-23 02:20:26,583 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), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:20:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 9049 transitions. [2021-11-23 02:20:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2021-11-23 02:20:26,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:26,594 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:26,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:20:26,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:20:27,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:20:27,008 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash -467999708, now seen corresponding path program 1 times [2021-11-23 02:20:27,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:20:27,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729252382] [2021-11-23 02:20:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:27,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:20:27,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:20:27,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:20:27,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:20:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:31,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 5166 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:20:31,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:20:35,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:20:38,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:20:38,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729252382] [2021-11-23 02:20:38,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729252382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:20:38,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1513859297] [2021-11-23 02:20:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:38,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:20:38,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:20:39,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:20:39,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-23 02:20:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:41,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 5166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:20:41,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:20:59,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:21:03,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1513859297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:03,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:21:03,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-23 02:21:03,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222688949] [2021-11-23 02:21:03,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:03,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:21:03,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:21:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:21:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:21:03,656 INFO L87 Difference]: Start difference. First operand 6047 states and 9049 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:21:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:03,907 INFO L93 Difference]: Finished difference Result 6049 states and 9050 transitions. [2021-11-23 02:21:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:21:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 839 [2021-11-23 02:21:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:03,967 INFO L225 Difference]: With dead ends: 6049 [2021-11-23 02:21:03,968 INFO L226 Difference]: Without dead ends: 6046 [2021-11-23 02:21:03,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3352 GetRequests, 3342 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:21:03,976 INFO L933 BasicCegarLoop]: 4527 mSDtfsCounter, 4317 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:03,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4317 Valid, 4527 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:21:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2021-11-23 02:21:04,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 6046. [2021-11-23 02:21:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 4295 states have (on average 1.3771827706635622) internal successors, (5915), 4415 states have internal predecessors, (5915), 1416 states have call successors, (1416), 335 states have call predecessors, (1416), 334 states have return successors, (1716), 1389 states have call predecessors, (1716), 1410 states have call successors, (1716) [2021-11-23 02:21:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 9047 transitions. [2021-11-23 02:21:04,365 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 9047 transitions. Word has length 839 [2021-11-23 02:21:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:04,367 INFO L470 AbstractCegarLoop]: Abstraction has 6046 states and 9047 transitions. [2021-11-23 02:21:04,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:21:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 9047 transitions. [2021-11-23 02:21:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2021-11-23 02:21:04,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:04,378 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:04,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:04,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:04,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:21:04,793 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:04,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1624245990, now seen corresponding path program 1 times [2021-11-23 02:21:04,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:21:04,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666215728] [2021-11-23 02:21:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:04,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:21:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:21:04,797 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:21:04,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:21:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:09,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 5167 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:21:09,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:21:12,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:21:16,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:21:16,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666215728] [2021-11-23 02:21:16,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666215728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:16,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1664117127] [2021-11-23 02:21:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:16,662 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:21:16,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:21:16,665 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:21:16,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-23 02:21:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:19,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 5167 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:21:19,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:21:37,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:21:41,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1664117127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:41,345 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:21:41,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-23 02:21:41,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865093956] [2021-11-23 02:21:41,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:41,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:21:41,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:21:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:21:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:21:41,350 INFO L87 Difference]: Start difference. First operand 6046 states and 9047 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:21:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:41,585 INFO L93 Difference]: Finished difference Result 6048 states and 9048 transitions. [2021-11-23 02:21:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:21:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 840 [2021-11-23 02:21:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:41,650 INFO L225 Difference]: With dead ends: 6048 [2021-11-23 02:21:41,650 INFO L226 Difference]: Without dead ends: 6045 [2021-11-23 02:21:41,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3356 GetRequests, 3346 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:21:41,656 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4314 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:41,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4314 Valid, 4525 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:21:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2021-11-23 02:21:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 6045. [2021-11-23 02:21:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6045 states, 4295 states have (on average 1.3769499417927824) internal successors, (5914), 4414 states have internal predecessors, (5914), 1415 states have call successors, (1415), 335 states have call predecessors, (1415), 334 states have return successors, (1716), 1389 states have call predecessors, (1716), 1410 states have call successors, (1716) [2021-11-23 02:21:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 9045 transitions. [2021-11-23 02:21:42,124 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 9045 transitions. Word has length 840 [2021-11-23 02:21:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:42,125 INFO L470 AbstractCegarLoop]: Abstraction has 6045 states and 9045 transitions. [2021-11-23 02:21:42,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:21:42,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 9045 transitions. [2021-11-23 02:21:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2021-11-23 02:21:42,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:42,137 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:42,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:42,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:42,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:21:42,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:42,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1186829799, now seen corresponding path program 1 times [2021-11-23 02:21:42,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:21:42,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300961657] [2021-11-23 02:21:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:42,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:21:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:21:42,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:21:42,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:21:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 5168 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:21:47,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:21:51,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:21:54,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:21:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300961657] [2021-11-23 02:21:54,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300961657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1469673602] [2021-11-23 02:21:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:54,902 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:21:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:21:54,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:21:54,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-23 02:21:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:57,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 5168 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:21:57,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:22:15,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:22:20,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1469673602] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:20,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:22:20,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-23 02:22:20,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438299494] [2021-11-23 02:22:20,053 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:22:20,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:22:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:22:20,056 INFO L87 Difference]: Start difference. First operand 6045 states and 9045 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:22:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:20,326 INFO L93 Difference]: Finished difference Result 6047 states and 9046 transitions. [2021-11-23 02:22:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:22:20,327 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), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 841 [2021-11-23 02:22:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:20,374 INFO L225 Difference]: With dead ends: 6047 [2021-11-23 02:22:20,374 INFO L226 Difference]: Without dead ends: 6036 [2021-11-23 02:22:20,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3360 GetRequests, 3350 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:22:20,380 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 4311 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4311 SdHoareTripleChecker+Valid, 4524 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 [2021-11-23 02:22:20,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4311 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:22:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-11-23 02:22:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 6036. [2021-11-23 02:22:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6036 states, 4287 states have (on average 1.3769535805924888) internal successors, (5903), 4405 states have internal predecessors, (5903), 1414 states have call successors, (1414), 335 states have call predecessors, (1414), 334 states have return successors, (1716), 1389 states have call predecessors, (1716), 1410 states have call successors, (1716) [2021-11-23 02:22:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 9033 transitions. [2021-11-23 02:22:20,768 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 9033 transitions. Word has length 841 [2021-11-23 02:22:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:20,770 INFO L470 AbstractCegarLoop]: Abstraction has 6036 states and 9033 transitions. [2021-11-23 02:22:20,770 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), 3 states have call successors, (117), 3 states have call predecessors, (117), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-23 02:22:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 9033 transitions. [2021-11-23 02:22:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2021-11-23 02:22:20,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:20,849 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:20,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:21,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:21,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:22:21,270 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:21,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash 118067470, now seen corresponding path program 1 times [2021-11-23 02:22:21,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:21,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868564189] [2021-11-23 02:22:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:21,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:21,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:21,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:21,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:22:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:26,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 5270 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:22:26,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:22:30,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:22:34,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:34,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868564189] [2021-11-23 02:22:34,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868564189] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:22:34,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1953873044] [2021-11-23 02:22:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:34,751 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:22:34,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:22:34,753 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:22:34,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-23 02:22:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:37,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 5270 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:22:37,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:22:38,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11491 trivial. 0 not checked. [2021-11-23 02:22:40,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1953873044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:40,590 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:22:40,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-23 02:22:40,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093189797] [2021-11-23 02:22:40,591 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:22:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:22:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:22:40,593 INFO L87 Difference]: Start difference. First operand 6036 states and 9033 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 02:22:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:43,174 INFO L93 Difference]: Finished difference Result 15930 states and 23622 transitions. [2021-11-23 02:22:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:22:43,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 862 [2021-11-23 02:22:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:43,250 INFO L225 Difference]: With dead ends: 15930 [2021-11-23 02:22:43,251 INFO L226 Difference]: Without dead ends: 10011 [2021-11-23 02:22:43,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3444 GetRequests, 3434 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:22:43,301 INFO L933 BasicCegarLoop]: 6274 mSDtfsCounter, 3026 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3026 SdHoareTripleChecker+Valid, 10506 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:43,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3026 Valid, 10506 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:22:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-11-23 02:22:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 9997. [2021-11-23 02:22:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9997 states, 7119 states have (on average 1.3702767242590252) internal successors, (9755), 7303 states have internal predecessors, (9755), 2268 states have call successors, (2268), 611 states have call predecessors, (2268), 609 states have return successors, (2723), 2235 states have call predecessors, (2723), 2264 states have call successors, (2723) [2021-11-23 02:22:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9997 states to 9997 states and 14746 transitions. [2021-11-23 02:22:44,195 INFO L78 Accepts]: Start accepts. Automaton has 9997 states and 14746 transitions. Word has length 862 [2021-11-23 02:22:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:44,197 INFO L470 AbstractCegarLoop]: Abstraction has 9997 states and 14746 transitions. [2021-11-23 02:22:44,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 02:22:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 9997 states and 14746 transitions. [2021-11-23 02:22:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2021-11-23 02:22:44,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:44,210 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:44,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:44,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-23 02:22:44,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:44,639 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 831927241, now seen corresponding path program 1 times [2021-11-23 02:22:44,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:44,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166670530] [2021-11-23 02:22:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:44,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:44,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:44,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:44,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:22:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:50,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 5467 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:22:50,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11496 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11125 trivial. 0 not checked. [2021-11-23 02:22:54,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11496 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11335 trivial. 0 not checked. [2021-11-23 02:22:58,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:58,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166670530] [2021-11-23 02:22:58,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166670530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:22:58,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380983987] [2021-11-23 02:22:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:58,553 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:22:58,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:22:58,562 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:22:58,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-23 02:23:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:01,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 5467 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:23:01,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11496 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11494 trivial. 0 not checked. [2021-11-23 02:23:02,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:23:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11496 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11492 trivial. 0 not checked. [2021-11-23 02:23:04,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380983987] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:23:04,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:23:04,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7, 3] total 12 [2021-11-23 02:23:04,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025416803] [2021-11-23 02:23:04,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:23:04,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:23:04,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:23:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:23:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:23:04,668 INFO L87 Difference]: Start difference. First operand 9997 states and 14746 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:23:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:23:05,387 INFO L93 Difference]: Finished difference Result 19877 states and 30172 transitions. [2021-11-23 02:23:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:23:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 893 [2021-11-23 02:23:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:23:05,447 INFO L225 Difference]: With dead ends: 19877 [2021-11-23 02:23:05,447 INFO L226 Difference]: Without dead ends: 10001 [2021-11-23 02:23:05,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3568 GetRequests, 3558 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:23:05,510 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9024 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:23:05,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9024 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:23:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10001 states. [2021-11-23 02:23:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10001 to 9997. [2021-11-23 02:23:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9997 states, 7119 states have (on average 1.368591094254811) internal successors, (9743), 7303 states have internal predecessors, (9743), 2268 states have call successors, (2268), 611 states have call predecessors, (2268), 609 states have return successors, (2723), 2235 states have call predecessors, (2723), 2264 states have call successors, (2723) [2021-11-23 02:23:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9997 states to 9997 states and 14734 transitions. [2021-11-23 02:23:06,297 INFO L78 Accepts]: Start accepts. Automaton has 9997 states and 14734 transitions. Word has length 893 [2021-11-23 02:23:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:23:06,299 INFO L470 AbstractCegarLoop]: Abstraction has 9997 states and 14734 transitions. [2021-11-23 02:23:06,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:23:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9997 states and 14734 transitions. [2021-11-23 02:23:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2021-11-23 02:23:06,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:06,313 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:23:06,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:23:06,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:23:06,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:23:06,730 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -325890170, now seen corresponding path program 1 times [2021-11-23 02:23:06,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:23:06,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110739496] [2021-11-23 02:23:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:06,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:23:06,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:23:06,737 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:23:06,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:23:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 5370 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:23:11,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:23:16,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:23:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:23:20,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:23:20,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110739496] [2021-11-23 02:23:20,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110739496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:23:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1665592504] [2021-11-23 02:23:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:20,354 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:23:20,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:23:20,355 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:23:20,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-23 02:23:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:31,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 5370 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:23:31,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:23:34,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:23:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 10 proven. 151 refuted. 0 times theorem prover too weak. 11330 trivial. 0 not checked. [2021-11-23 02:23:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1665592504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:23:38,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873085608] [2021-11-23 02:23:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:38,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:23:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:23:38,161 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:23:38,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a885a345-5126-4201-a4d4-ae807218fbb0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 02:23:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:42,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 5370 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:23:42,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11491 backedges. 370 proven. 1 refuted. 0 times theorem prover too weak. 11120 trivial. 0 not checked. [2021-11-23 02:23:46,560 INFO L328 TraceCheckSpWp]: Computing backward predicates...