./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:05:06,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:05:06,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:05:06,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:05:06,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:05:06,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:05:06,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:05:06,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:05:06,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:05:06,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:05:06,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:05:06,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:05:06,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:05:06,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:05:06,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:05:06,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:05:06,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:05:06,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:05:06,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:05:06,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:05:06,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:05:06,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:05:06,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:05:06,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:05:06,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:05:06,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:05:06,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:05:06,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:05:06,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:05:06,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:05:06,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:05:06,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:05:06,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:05:06,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:05:06,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:05:06,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:05:06,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:05:06,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:05:06,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:05:06,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:05:06,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:05:06,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:05:06,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:05:06,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:05:06,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:05:06,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:05:06,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:05:06,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:05:06,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:05:06,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:05:06,363 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:05:06,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:05:06,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:05:06,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:05:06,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:05:06,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:05:06,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:05:06,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:05:06,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:05:06,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:05:06,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:05:06,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:05:06,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:05:06,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:06,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:05:06,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:05:06,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:05:06,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:05:06,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:05:06,371 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:05:06,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:05:06,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:05:06,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:05:06,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-20 06:05:06,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:05:06,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:05:06,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:05:06,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:05:06,644 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:05:06,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-20 06:05:06,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/09ef15df9/e30a60558a1e429f9bfeaab492cb9f27/FLAGa8d6f9e00 [2021-11-20 06:05:07,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:05:07,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-20 06:05:07,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/09ef15df9/e30a60558a1e429f9bfeaab492cb9f27/FLAGa8d6f9e00 [2021-11-20 06:05:08,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/09ef15df9/e30a60558a1e429f9bfeaab492cb9f27 [2021-11-20 06:05:08,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:05:08,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:05:08,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:08,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:05:08,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:05:08,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:08" (1/1) ... [2021-11-20 06:05:08,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d77722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:08, skipping insertion in model container [2021-11-20 06:05:08,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:08" (1/1) ... [2021-11-20 06:05:08,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:05:08,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:05:09,671 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_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-20 06:05:10,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:10,897 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:05:11,128 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_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-20 06:05:11,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:11,595 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:05:11,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11 WrapperNode [2021-11-20 06:05:11,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:11,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:11,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:05:11,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:05:11,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:11,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:11,945 INFO L137 Inliner]: procedures = 310, calls = 1780, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4697 [2021-11-20 06:05:11,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:11,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:05:11,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:05:11,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:05:11,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:11,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:11,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:11,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:12,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:12,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:12,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:12,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:05:12,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:05:12,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:05:12,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:05:12,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (1/1) ... [2021-11-20 06:05:12,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:12,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:12,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:12,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:05:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 06:05:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 06:05:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-20 06:05:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-20 06:05:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 06:05:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:05:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 06:05:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 06:05:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2021-11-20 06:05:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2021-11-20 06:05:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 06:05:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 06:05:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-20 06:05:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-20 06:05:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 06:05:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 06:05:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:05:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2021-11-20 06:05:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2021-11-20 06:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-20 06:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2021-11-20 06:05:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2021-11-20 06:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-20 06:05:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-20 06:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 06:05:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 06:05:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2021-11-20 06:05:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2021-11-20 06:05:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 06:05:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 06:05:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 06:05:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 06:05:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 06:05:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 06:05:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 06:05:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 06:05:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:05:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:05:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2021-11-20 06:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2021-11-20 06:05:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 06:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 06:05:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2021-11-20 06:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2021-11-20 06:05:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:05:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2021-11-20 06:05:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2021-11-20 06:05:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 06:05:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 06:05:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 06:05:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 06:05:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-20 06:05:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-20 06:05:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:05:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 06:05:12,337 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 06:05:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 06:05:12,338 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 06:05:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 06:05:12,338 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 06:05:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 06:05:12,339 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 06:05:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-20 06:05:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2021-11-20 06:05:12,339 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2021-11-20 06:05:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 06:05:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 06:05:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 06:05:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 06:05:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-20 06:05:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-20 06:05:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 06:05:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 06:05:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:05:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 06:05:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 06:05:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:05:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 06:05:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 06:05:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 06:05:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 06:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 06:05:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 06:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 06:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 06:05:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 06:05:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 06:05:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 06:05:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 06:05:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 06:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 06:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2021-11-20 06:05:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2021-11-20 06:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-20 06:05:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-20 06:05:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2021-11-20 06:05:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2021-11-20 06:05:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:05:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 06:05:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 06:05:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 06:05:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 06:05:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-20 06:05:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-20 06:05:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-20 06:05:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-20 06:05:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 06:05:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 06:05:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:05:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:05:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 06:05:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 06:05:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 06:05:12,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 06:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-20 06:05:12,356 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-20 06:05:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 06:05:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 06:05:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2021-11-20 06:05:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2021-11-20 06:05:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:05:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 06:05:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 06:05:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 06:05:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 06:05:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2021-11-20 06:05:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2021-11-20 06:05:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:05:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 06:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 06:05:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2021-11-20 06:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2021-11-20 06:05:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 06:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 06:05:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 06:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 06:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 06:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-20 06:05:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-20 06:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-20 06:05:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-20 06:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2021-11-20 06:05:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2021-11-20 06:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-11-20 06:05:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-11-20 06:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2021-11-20 06:05:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2021-11-20 06:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2021-11-20 06:05:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2021-11-20 06:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 06:05:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 06:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-20 06:05:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-20 06:05:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 06:05:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 06:05:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2021-11-20 06:05:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2021-11-20 06:05:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-20 06:05:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-20 06:05:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 06:05:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 06:05:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:05:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2021-11-20 06:05:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2021-11-20 06:05:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 06:05:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 06:05:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2021-11-20 06:05:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2021-11-20 06:05:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:05:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:05:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 06:05:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 06:05:13,352 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:05:13,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:05:13,684 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 06:05:18,180 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:05:18,204 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:05:18,204 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:05:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:18 BoogieIcfgContainer [2021-11-20 06:05:18,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:05:18,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:05:18,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:05:18,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:05:18,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:05:08" (1/3) ... [2021-11-20 06:05:18,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a26715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:18, skipping insertion in model container [2021-11-20 06:05:18,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:11" (2/3) ... [2021-11-20 06:05:18,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a26715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:18, skipping insertion in model container [2021-11-20 06:05:18,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:18" (3/3) ... [2021-11-20 06:05:18,225 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-20 06:05:18,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:05:18,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:05:18,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:05:18,344 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:05:18,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:05:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-20 06:05:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:05:18,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:18,466 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:18,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1671104070, now seen corresponding path program 1 times [2021-11-20 06:05:18,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:18,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246023764] [2021-11-20 06:05:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:18,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:05:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:05:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:05:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:05:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:05:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:05:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:05:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:05:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:05:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:05:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:05:19,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246023764] [2021-11-20 06:05:19,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246023764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:19,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:19,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:05:19,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191525401] [2021-11-20 06:05:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:19,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:05:19,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:05:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:05:19,531 INFO L87 Difference]: Start difference. First operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:05:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:25,879 INFO L93 Difference]: Finished difference Result 4953 states and 7222 transitions. [2021-11-20 06:05:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:05:25,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2021-11-20 06:05:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:25,953 INFO L225 Difference]: With dead ends: 4953 [2021-11-20 06:05:25,953 INFO L226 Difference]: Without dead ends: 3268 [2021-11-20 06:05:25,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:05:25,974 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 2878 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 1195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 5062 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1195 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:25,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3264 Valid, 5062 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1195 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 06:05:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-11-20 06:05:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3090. [2021-11-20 06:05:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 2136 states have (on average 1.3150749063670413) internal successors, (2809), 2172 states have internal predecessors, (2809), 801 states have call successors, (801), 153 states have call predecessors, (801), 152 states have return successors, (800), 794 states have call predecessors, (800), 800 states have call successors, (800) [2021-11-20 06:05:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4410 transitions. [2021-11-20 06:05:26,314 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4410 transitions. Word has length 80 [2021-11-20 06:05:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:26,315 INFO L470 AbstractCegarLoop]: Abstraction has 3090 states and 4410 transitions. [2021-11-20 06:05:26,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:05:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4410 transitions. [2021-11-20 06:05:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 06:05:26,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:26,324 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:26,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:05:26,325 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 568154741, now seen corresponding path program 1 times [2021-11-20 06:05:26,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662044363] [2021-11-20 06:05:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:26,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:05:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:05:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:05:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:05:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:05:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:05:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:05:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:05:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:05:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:05:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:05:26,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:26,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662044363] [2021-11-20 06:05:26,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662044363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:26,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:26,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:05:26,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539291724] [2021-11-20 06:05:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:26,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:05:26,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:05:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:05:26,842 INFO L87 Difference]: Start difference. First operand 3090 states and 4410 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:05:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:34,955 INFO L93 Difference]: Finished difference Result 9571 states and 13732 transitions. [2021-11-20 06:05:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:05:34,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 85 [2021-11-20 06:05:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:35,014 INFO L225 Difference]: With dead ends: 9571 [2021-11-20 06:05:35,014 INFO L226 Difference]: Without dead ends: 6502 [2021-11-20 06:05:35,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:05:35,035 INFO L933 BasicCegarLoop]: 2453 mSDtfsCounter, 2816 mSDsluCounter, 6489 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 1167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 8942 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1167 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:35,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3216 Valid, 8942 Invalid, 4285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1167 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-20 06:05:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2021-11-20 06:05:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 6218. [2021-11-20 06:05:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 4302 states have (on average 1.3147373314737332) internal successors, (5656), 4376 states have internal predecessors, (5656), 1605 states have call successors, (1605), 305 states have call predecessors, (1605), 310 states have return successors, (1624), 1596 states have call predecessors, (1624), 1604 states have call successors, (1624) [2021-11-20 06:05:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8885 transitions. [2021-11-20 06:05:35,509 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8885 transitions. Word has length 85 [2021-11-20 06:05:35,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:35,510 INFO L470 AbstractCegarLoop]: Abstraction has 6218 states and 8885 transitions. [2021-11-20 06:05:35,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:05:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8885 transitions. [2021-11-20 06:05:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-11-20 06:05:35,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:35,542 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:35,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:05:35,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash -341573449, now seen corresponding path program 1 times [2021-11-20 06:05:35,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:35,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557094406] [2021-11-20 06:05:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:35,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:05:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:05:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:05:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:05:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:05:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:05:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:05:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:05:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:05:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:05:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:05:36,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:36,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557094406] [2021-11-20 06:05:36,119 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 06:05:36,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111424338] [2021-11-20 06:05:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:36,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:36,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:05:36,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:05:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:37,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 4111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:05:37,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-20 06:05:38,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:05:38,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111424338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:38,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:38,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:05:38,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523915258] [2021-11-20 06:05:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:38,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:05:38,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:05:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:05:38,665 INFO L87 Difference]: Start difference. First operand 6218 states and 8885 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-20 06:05:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:39,178 INFO L93 Difference]: Finished difference Result 17502 states and 25013 transitions. [2021-11-20 06:05:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:05:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 467 [2021-11-20 06:05:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:39,287 INFO L225 Difference]: With dead ends: 17502 [2021-11-20 06:05:39,287 INFO L226 Difference]: Without dead ends: 11310 [2021-11-20 06:05:39,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:05:39,335 INFO L933 BasicCegarLoop]: 2552 mSDtfsCounter, 1840 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4648 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:05:39,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 4648 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:05:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-11-20 06:05:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11250. [2021-11-20 06:05:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11250 states, 7834 states have (on average 1.315419964258361) internal successors, (10305), 7998 states have internal predecessors, (10305), 2827 states have call successors, (2827), 577 states have call predecessors, (2827), 588 states have return successors, (2870), 2790 states have call predecessors, (2870), 2826 states have call successors, (2870) [2021-11-20 06:05:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11250 states to 11250 states and 16002 transitions. [2021-11-20 06:05:40,155 INFO L78 Accepts]: Start accepts. Automaton has 11250 states and 16002 transitions. Word has length 467 [2021-11-20 06:05:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:40,155 INFO L470 AbstractCegarLoop]: Abstraction has 11250 states and 16002 transitions. [2021-11-20 06:05:40,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-20 06:05:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 11250 states and 16002 transitions. [2021-11-20 06:05:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-11-20 06:05:40,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:40,202 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:40,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:05:40,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:05:40,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash 609671314, now seen corresponding path program 1 times [2021-11-20 06:05:40,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:40,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971337571] [2021-11-20 06:05:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:40,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:05:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:05:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:05:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:05:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:05:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:05:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:05:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:05:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:05:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:05:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:05:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 06:05:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 06:05:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 06:05:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 06:05:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 06:05:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 06:05:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 06:05:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:05:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:05:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:05:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 06:05:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:05:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:05:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:05:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:05:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 06:05:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 06:05:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:05:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:05:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 06:05:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:05:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:05:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:05:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:05:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:05:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:05:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:05:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-20 06:05:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-20 06:05:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 06:05:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-20 06:05:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-20 06:05:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-20 06:05:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-20 06:05:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-20 06:05:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 06:05:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-20 06:05:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-20 06:05:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-20 06:05:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:05:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-20 06:05:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-20 06:05:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-20 06:05:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-20 06:05:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-20 06:05:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-20 06:05:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-20 06:05:41,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:05:41,787 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Auxiliary term must not be contained in any collection at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.SmtFreePredicateFactory$AuxiliaryTerm.hashCode(SmtFreePredicateFactory.java:134) at java.base/java.util.HashMap.hash(HashMap.java:339) at java.base/java.util.HashMap.containsKey(HashMap.java:591) at java.base/java.util.HashSet.contains(HashSet.java:204) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.ContainsQuantifier$QuantifierFinder.walk(ContainsQuantifier.java:67) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.ContainsQuantifier.containsQuantifier(ContainsQuantifier.java:124) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckStatisticsGenerator.reportSequenceOfInterpolants(TraceCheckStatisticsGenerator.java:107) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) 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.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) 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) [2021-11-20 06:05:41,793 INFO L158 Benchmark]: Toolchain (without parser) took 33707.66ms. Allocated memory was 115.3MB in the beginning and 715.1MB in the end (delta: 599.8MB). Free memory was 68.7MB in the beginning and 432.3MB in the end (delta: -363.6MB). Peak memory consumption was 235.4MB. Max. memory is 16.1GB. [2021-11-20 06:05:41,793 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:41,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3510.45ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 68.3MB in the beginning and 89.5MB in the end (delta: -21.2MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2021-11-20 06:05:41,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 344.53ms. Allocated memory is still 163.6MB. Free memory was 89.5MB in the beginning and 62.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-20 06:05:41,795 INFO L158 Benchmark]: Boogie Preprocessor took 291.55ms. Allocated memory was 163.6MB in the beginning and 243.3MB in the end (delta: 79.7MB). Free memory was 62.2MB in the beginning and 147.5MB in the end (delta: -85.3MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-11-20 06:05:41,795 INFO L158 Benchmark]: RCFGBuilder took 5971.84ms. Allocated memory was 243.3MB in the beginning and 425.7MB in the end (delta: 182.5MB). Free memory was 147.5MB in the beginning and 255.6MB in the end (delta: -108.1MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2021-11-20 06:05:41,796 INFO L158 Benchmark]: TraceAbstraction took 23579.57ms. Allocated memory was 425.7MB in the beginning and 715.1MB in the end (delta: 289.4MB). Free memory was 255.6MB in the beginning and 432.3MB in the end (delta: -176.7MB). Peak memory consumption was 112.7MB. Max. memory is 16.1GB. [2021-11-20 06:05:41,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3510.45ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 68.3MB in the beginning and 89.5MB in the end (delta: -21.2MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 344.53ms. Allocated memory is still 163.6MB. Free memory was 89.5MB in the beginning and 62.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 291.55ms. Allocated memory was 163.6MB in the beginning and 243.3MB in the end (delta: 79.7MB). Free memory was 62.2MB in the beginning and 147.5MB in the end (delta: -85.3MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * RCFGBuilder took 5971.84ms. Allocated memory was 243.3MB in the beginning and 425.7MB in the end (delta: 182.5MB). Free memory was 147.5MB in the beginning and 255.6MB in the end (delta: -108.1MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. * TraceAbstraction took 23579.57ms. Allocated memory was 425.7MB in the beginning and 715.1MB in the end (delta: 289.4MB). Free memory was 255.6MB in the beginning and 432.3MB in the end (delta: -176.7MB). Peak memory consumption was 112.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Auxiliary term must not be contained in any collection de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Auxiliary term must not be contained in any collection: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.SmtFreePredicateFactory$AuxiliaryTerm.hashCode(SmtFreePredicateFactory.java:134) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-20 06:05:41,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:05:44,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:05:44,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:05:44,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:05:44,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:05:44,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:05:44,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:05:44,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:05:44,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:05:44,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:05:44,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:05:44,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:05:44,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:05:44,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:05:44,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:05:44,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:05:44,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:05:44,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:05:44,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:05:44,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:05:44,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:05:44,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:05:44,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:05:44,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:05:44,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:05:44,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:05:44,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:05:44,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:05:44,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:05:44,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:05:44,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:05:44,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:05:44,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:05:44,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:05:44,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:05:44,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:05:44,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:05:44,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:05:44,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:05:44,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:05:44,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:05:44,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-20 06:05:44,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:05:44,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:05:44,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:05:44,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:05:44,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:05:44,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:05:44,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:05:44,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:05:44,466 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:05:44,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:05:44,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:05:44,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:05:44,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:05:44,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:05:44,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:05:44,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:05:44,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:05:44,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:05:44,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:05:44,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:05:44,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:05:44,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:05:44,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:05:44,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:44,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:05:44,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:05:44,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:05:44,473 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:05:44,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:05:44,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:05:44,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:05:44,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:05:44,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:05:44,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:05:44,475 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_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-20 06:05:44,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:05:44,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:05:44,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:05:44,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:05:44,963 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:05:44,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-20 06:05:45,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/aee724ed9/b1e2bfbf6d3e45a4a654d7024c898e55/FLAGe82c161ac [2021-11-20 06:05:46,222 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:05:46,222 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-20 06:05:46,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/aee724ed9/b1e2bfbf6d3e45a4a654d7024c898e55/FLAGe82c161ac [2021-11-20 06:05:46,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/data/aee724ed9/b1e2bfbf6d3e45a4a654d7024c898e55 [2021-11-20 06:05:46,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:05:46,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:05:46,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:46,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:05:46,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:05:46,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:46" (1/1) ... [2021-11-20 06:05:46,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682b3ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:46, skipping insertion in model container [2021-11-20 06:05:46,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:46" (1/1) ... [2021-11-20 06:05:46,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:05:46,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:05:48,493 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_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-20 06:05:49,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:49,971 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:05:50,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:05:50,186 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_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-20 06:05:50,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:50,429 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:05:50,597 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_684642b4-bcaf-44fc-95af-d660e690e8d4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-20 06:05:50,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:51,104 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:05:51,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51 WrapperNode [2021-11-20 06:05:51,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:51,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:51,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:05:51,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:05:51,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,452 INFO L137 Inliner]: procedures = 324, calls = 1780, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4537 [2021-11-20 06:05:51,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:51,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:05:51,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:05:51,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:05:51,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:05:51,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:05:51,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:05:51,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:05:51,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (1/1) ... [2021-11-20 06:05:51,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:51,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:51,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:05:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 06:05:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 06:05:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 06:05:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-20 06:05:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-20 06:05:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-20 06:05:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:05:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 06:05:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-20 06:05:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:05:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 06:05:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 06:05:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2021-11-20 06:05:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2021-11-20 06:05:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 06:05:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 06:05:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-20 06:05:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-20 06:05:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 06:05:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 06:05:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:05:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:05:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2021-11-20 06:05:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2021-11-20 06:05:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-20 06:05:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2021-11-20 06:05:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2021-11-20 06:05:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-20 06:05:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-20 06:05:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 06:05:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 06:05:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2021-11-20 06:05:51,902 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2021-11-20 06:05:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 06:05:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 06:05:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 06:05:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 06:05:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 06:05:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 06:05:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 06:05:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 06:05:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:05:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:05:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2021-11-20 06:05:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2021-11-20 06:05:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 06:05:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 06:05:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2021-11-20 06:05:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2021-11-20 06:05:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:05:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2021-11-20 06:05:51,908 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2021-11-20 06:05:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 06:05:51,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 06:05:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 06:05:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 06:05:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-20 06:05:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-20 06:05:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:05:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 06:05:51,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 06:05:51,911 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 06:05:51,911 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 06:05:51,911 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 06:05:51,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 06:05:51,911 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 06:05:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 06:05:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-20 06:05:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2021-11-20 06:05:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2021-11-20 06:05:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 06:05:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 06:05:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 06:05:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 06:05:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-20 06:05:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-20 06:05:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 06:05:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 06:05:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 06:05:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 06:05:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:05:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:05:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 06:05:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 06:05:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:05:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:05:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 06:05:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-20 06:05:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 06:05:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 06:05:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 06:05:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 06:05:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 06:05:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 06:05:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 06:05:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 06:05:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 06:05:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 06:05:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 06:05:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 06:05:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2021-11-20 06:05:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2021-11-20 06:05:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-20 06:05:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-20 06:05:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2021-11-20 06:05:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2021-11-20 06:05:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 06:05:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 06:05:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 06:05:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 06:05:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-20 06:05:51,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-20 06:05:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-20 06:05:51,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-20 06:05:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 06:05:51,929 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 06:05:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:05:51,932 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:05:51,932 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 06:05:51,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 06:05:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 06:05:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 06:05:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-20 06:05:51,940 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-20 06:05:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-20 06:05:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-20 06:05:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-20 06:05:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-20 06:05:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 06:05:51,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 06:05:51,941 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2021-11-20 06:05:51,945 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2021-11-20 06:05:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:05:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 06:05:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 06:05:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 06:05:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 06:05:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2021-11-20 06:05:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2021-11-20 06:05:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:05:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 06:05:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 06:05:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2021-11-20 06:05:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2021-11-20 06:05:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 06:05:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 06:05:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 06:05:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 06:05:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:05:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 06:05:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-20 06:05:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-20 06:05:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-20 06:05:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-20 06:05:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-20 06:05:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-20 06:05:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-20 06:05:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2021-11-20 06:05:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2021-11-20 06:05:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-11-20 06:05:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-11-20 06:05:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2021-11-20 06:05:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2021-11-20 06:05:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2021-11-20 06:05:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2021-11-20 06:05:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 06:05:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 06:05:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-20 06:05:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-20 06:05:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 06:05:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 06:05:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2021-11-20 06:05:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2021-11-20 06:05:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-20 06:05:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-20 06:05:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 06:05:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 06:05:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-20 06:05:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2021-11-20 06:05:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2021-11-20 06:05:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 06:05:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 06:05:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2021-11-20 06:05:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2021-11-20 06:05:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:05:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:05:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 06:05:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 06:05:52,749 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:05:52,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:05:53,623 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 06:06:34,256 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:06:34,289 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:06:34,290 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:06:34,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:34 BoogieIcfgContainer [2021-11-20 06:06:34,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:06:34,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:06:34,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:06:34,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:06:34,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:05:46" (1/3) ... [2021-11-20 06:06:34,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330e0cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:34, skipping insertion in model container [2021-11-20 06:06:34,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:51" (2/3) ... [2021-11-20 06:06:34,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330e0cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:34, skipping insertion in model container [2021-11-20 06:06:34,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:34" (3/3) ... [2021-11-20 06:06:34,307 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-20 06:06:34,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:06:34,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:06:34,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:06:34,430 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:06:34,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:06:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-20 06:06:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:06:34,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:34,543 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:34,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:34,548 INFO L85 PathProgramCache]: Analyzing trace with hash 934868167, now seen corresponding path program 1 times [2021-11-20 06:06:34,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:34,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945453516] [2021-11-20 06:06:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:34,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:34,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:34,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:34,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:06:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:35,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:06:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:06:36,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:06:36,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:06:36,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945453516] [2021-11-20 06:06:36,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945453516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:36,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:36,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:06:36,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389452603] [2021-11-20 06:06:36,421 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:36,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:06:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:06:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:06:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:06:36,488 INFO L87 Difference]: Start difference. First operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:36,884 INFO L93 Difference]: Finished difference Result 3217 states and 4664 transitions. [2021-11-20 06:06:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:06:36,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2021-11-20 06:06:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:36,943 INFO L225 Difference]: With dead ends: 3217 [2021-11-20 06:06:36,944 INFO L226 Difference]: Without dead ends: 1572 [2021-11-20 06:06:36,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:06:36,981 INFO L933 BasicCegarLoop]: 2310 mSDtfsCounter, 0 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6926 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:36,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6926 Invalid, 6 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:06:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-11-20 06:06:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1572. [2021-11-20 06:06:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1087 states have (on average 1.31278748850046) internal successors, (1427), 1105 states have internal predecessors, (1427), 408 states have call successors, (408), 77 states have call predecessors, (408), 76 states have return successors, (407), 404 states have call predecessors, (407), 407 states have call successors, (407) [2021-11-20 06:06:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2242 transitions. [2021-11-20 06:06:37,289 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2242 transitions. Word has length 80 [2021-11-20 06:06:37,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:37,292 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 2242 transitions. [2021-11-20 06:06:37,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2242 transitions. [2021-11-20 06:06:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 06:06:37,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:37,306 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-20 06:06:37,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:37,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:06:37,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1681099257, now seen corresponding path program 1 times [2021-11-20 06:06:37,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346730571] [2021-11-20 06:06:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:37,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:37,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:37,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:06:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:38,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:06:38,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:06:39,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:06:39,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:06:39,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346730571] [2021-11-20 06:06:39,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346730571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:06:39,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:06:39,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 06:06:39,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745057089] [2021-11-20 06:06:39,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:06:39,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:06:39,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:06:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:06:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:06:39,665 INFO L87 Difference]: Start difference. First operand 1572 states and 2242 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:39,904 INFO L93 Difference]: Finished difference Result 3119 states and 4450 transitions. [2021-11-20 06:06:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:06:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2021-11-20 06:06:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:39,922 INFO L225 Difference]: With dead ends: 3119 [2021-11-20 06:06:39,922 INFO L226 Difference]: Without dead ends: 1574 [2021-11-20 06:06:39,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:06:39,932 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 0 mSDsluCounter, 8948 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11187 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:39,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11187 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:06:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-11-20 06:06:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2021-11-20 06:06:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1089 states have (on average 1.3122130394857667) internal successors, (1429), 1107 states have internal predecessors, (1429), 408 states have call successors, (408), 77 states have call predecessors, (408), 76 states have return successors, (407), 404 states have call predecessors, (407), 407 states have call successors, (407) [2021-11-20 06:06:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2244 transitions. [2021-11-20 06:06:40,031 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2244 transitions. Word has length 82 [2021-11-20 06:06:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:40,033 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 2244 transitions. [2021-11-20 06:06:40,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2244 transitions. [2021-11-20 06:06:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-20 06:06:40,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:40,037 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:40,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:40,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:06:40,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1225041735, now seen corresponding path program 2 times [2021-11-20 06:06:40,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:40,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460228142] [2021-11-20 06:06:40,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:06:40,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:40,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:40,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:40,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:06:41,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:06:41,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:06:41,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:06:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 06:06:41,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 06:06:41,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:06:41,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460228142] [2021-11-20 06:06:41,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460228142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:41,492 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:41,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:06:41,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893752901] [2021-11-20 06:06:41,493 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:41,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:06:41,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:06:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:06:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:06:41,495 INFO L87 Difference]: Start difference. First operand 1574 states and 2244 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:47,693 INFO L93 Difference]: Finished difference Result 6157 states and 8791 transitions. [2021-11-20 06:06:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:06:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 84 [2021-11-20 06:06:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:47,741 INFO L225 Difference]: With dead ends: 6157 [2021-11-20 06:06:47,741 INFO L226 Difference]: Without dead ends: 4613 [2021-11-20 06:06:47,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:06:47,758 INFO L933 BasicCegarLoop]: 3041 mSDtfsCounter, 5744 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5744 SdHoareTripleChecker+Valid, 6620 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:47,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5744 Valid, 6620 Invalid, 1616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [791 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 06:06:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2021-11-20 06:06:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 4613. [2021-11-20 06:06:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 3190 states have (on average 1.3156739811912226) internal successors, (4197), 3244 states have internal predecessors, (4197), 1194 states have call successors, (1194), 229 states have call predecessors, (1194), 228 states have return successors, (1193), 1184 states have call predecessors, (1193), 1193 states have call successors, (1193) [2021-11-20 06:06:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 6584 transitions. [2021-11-20 06:06:48,141 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 6584 transitions. Word has length 84 [2021-11-20 06:06:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:48,144 INFO L470 AbstractCegarLoop]: Abstraction has 4613 states and 6584 transitions. [2021-11-20 06:06:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 6584 transitions. [2021-11-20 06:06:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:06:48,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:48,150 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:48,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:48,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:06:48,366 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1801508975, now seen corresponding path program 1 times [2021-11-20 06:06:48,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:48,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664599336] [2021-11-20 06:06:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:48,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:48,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:48,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:48,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:06:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:49,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:06:49,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 06:06:49,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 06:06:50,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:06:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664599336] [2021-11-20 06:06:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664599336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:50,079 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:50,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-20 06:06:50,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387539496] [2021-11-20 06:06:50,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:50,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:06:50,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:06:50,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:06:50,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:06:50,082 INFO L87 Difference]: Start difference. First operand 4613 states and 6584 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:50,884 INFO L93 Difference]: Finished difference Result 13776 states and 19692 transitions. [2021-11-20 06:06:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:06:50,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 89 [2021-11-20 06:06:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:50,978 INFO L225 Difference]: With dead ends: 13776 [2021-11-20 06:06:50,978 INFO L226 Difference]: Without dead ends: 9188 [2021-11-20 06:06:51,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:06:51,011 INFO L933 BasicCegarLoop]: 2683 mSDtfsCounter, 2216 mSDsluCounter, 7567 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 10250 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:51,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 10250 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:06:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2021-11-20 06:06:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 9188. [2021-11-20 06:06:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9188 states, 6354 states have (on average 1.3158640226628895) internal successors, (8361), 6462 states have internal predecessors, (8361), 2377 states have call successors, (2377), 457 states have call predecessors, (2377), 456 states have return successors, (2388), 2358 states have call predecessors, (2388), 2376 states have call successors, (2388) [2021-11-20 06:06:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9188 states to 9188 states and 13126 transitions. [2021-11-20 06:06:51,746 INFO L78 Accepts]: Start accepts. Automaton has 9188 states and 13126 transitions. Word has length 89 [2021-11-20 06:06:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:51,747 INFO L470 AbstractCegarLoop]: Abstraction has 9188 states and 13126 transitions. [2021-11-20 06:06:51,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-20 06:06:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9188 states and 13126 transitions. [2021-11-20 06:06:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-11-20 06:06:51,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:51,808 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:51,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:52,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:06:52,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -420332833, now seen corresponding path program 1 times [2021-11-20 06:06:52,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:52,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948022330] [2021-11-20 06:06:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:52,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:52,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:52,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:52,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:06:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:06:53,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:06:53,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:06:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2021-11-20 06:06:55,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:06:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2021-11-20 06:06:56,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:06:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948022330] [2021-11-20 06:06:56,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948022330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:06:56,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:06:56,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:06:56,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542984452] [2021-11-20 06:06:56,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:06:56,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:06:56,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:06:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:06:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:06:56,671 INFO L87 Difference]: Start difference. First operand 9188 states and 13126 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2021-11-20 06:06:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:06:57,645 INFO L93 Difference]: Finished difference Result 25638 states and 36527 transitions. [2021-11-20 06:06:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:06:57,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) Word has length 471 [2021-11-20 06:06:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:06:57,812 INFO L225 Difference]: With dead ends: 25638 [2021-11-20 06:06:57,812 INFO L226 Difference]: Without dead ends: 16480 [2021-11-20 06:06:57,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:06:57,868 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 1800 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 4672 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:06:57,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 4672 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:06:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16480 states. [2021-11-20 06:06:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16480 to 16394. [2021-11-20 06:06:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16394 states, 11344 states have (on average 1.3162023977433004) internal successors, (14931), 11584 states have internal predecessors, (14931), 4185 states have call successors, (4185), 865 states have call predecessors, (4185), 864 states have return successors, (4217), 4118 states have call predecessors, (4217), 4184 states have call successors, (4217) [2021-11-20 06:06:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16394 states to 16394 states and 23333 transitions. [2021-11-20 06:06:59,044 INFO L78 Accepts]: Start accepts. Automaton has 16394 states and 23333 transitions. Word has length 471 [2021-11-20 06:06:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:06:59,046 INFO L470 AbstractCegarLoop]: Abstraction has 16394 states and 23333 transitions. [2021-11-20 06:06:59,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2021-11-20 06:06:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 16394 states and 23333 transitions. [2021-11-20 06:06:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-20 06:06:59,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:06:59,121 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:06:59,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:06:59,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:06:59,335 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:06:59,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:06:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1063400336, now seen corresponding path program 1 times [2021-11-20 06:06:59,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:06:59,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633807988] [2021-11-20 06:06:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:06:59,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:06:59,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:06:59,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:06:59,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:07:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:01,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:07:01,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-20 06:07:03,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2021-11-20 06:07:04,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:07:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633807988] [2021-11-20 06:07:04,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633807988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:04,386 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:04,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:07:04,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88104337] [2021-11-20 06:07:04,387 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:04,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:07:04,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:07:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:07:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:07:04,391 INFO L87 Difference]: Start difference. First operand 16394 states and 23333 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 2 states have call successors, (143), 2 states have call predecessors, (143), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2021-11-20 06:07:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:05,925 INFO L93 Difference]: Finished difference Result 42061 states and 59896 transitions. [2021-11-20 06:07:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:07:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 2 states have call successors, (143), 2 states have call predecessors, (143), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 517 [2021-11-20 06:07:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:06,123 INFO L225 Difference]: With dead ends: 42061 [2021-11-20 06:07:06,123 INFO L226 Difference]: Without dead ends: 25697 [2021-11-20 06:07:06,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:07:06,427 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 1766 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:06,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 5642 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:07:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25697 states. [2021-11-20 06:07:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25697 to 25349. [2021-11-20 06:07:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25349 states, 17603 states have (on average 1.321763335795035) internal successors, (23267), 17925 states have internal predecessors, (23267), 6399 states have call successors, (6399), 1347 states have call predecessors, (6399), 1346 states have return successors, (6440), 6314 states have call predecessors, (6440), 6398 states have call successors, (6440) [2021-11-20 06:07:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25349 states to 25349 states and 36106 transitions. [2021-11-20 06:07:08,338 INFO L78 Accepts]: Start accepts. Automaton has 25349 states and 36106 transitions. Word has length 517 [2021-11-20 06:07:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:08,339 INFO L470 AbstractCegarLoop]: Abstraction has 25349 states and 36106 transitions. [2021-11-20 06:07:08,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 2 states have call successors, (143), 2 states have call predecessors, (143), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2021-11-20 06:07:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25349 states and 36106 transitions. [2021-11-20 06:07:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-11-20 06:07:08,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:08,453 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:08,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:08,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:07:08,670 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash 775553112, now seen corresponding path program 1 times [2021-11-20 06:07:08,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:07:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452841444] [2021-11-20 06:07:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:08,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:07:08,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:07:08,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:07:08,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:07:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:10,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:07:11,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2021-11-20 06:07:12,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2021-11-20 06:07:13,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:07:13,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452841444] [2021-11-20 06:07:13,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452841444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:13,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:13,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:07:13,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160542161] [2021-11-20 06:07:13,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:13,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:07:13,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:07:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:07:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:07:13,968 INFO L87 Difference]: Start difference. First operand 25349 states and 36106 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 4 states have call successors, (151), 3 states have call predecessors, (151), 3 states have return successors, (150), 4 states have call predecessors, (150), 4 states have call successors, (150) [2021-11-20 06:07:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:19,244 INFO L93 Difference]: Finished difference Result 71251 states and 101119 transitions. [2021-11-20 06:07:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:07:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 4 states have call successors, (151), 3 states have call predecessors, (151), 3 states have return successors, (150), 4 states have call predecessors, (150), 4 states have call successors, (150) Word has length 552 [2021-11-20 06:07:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:19,593 INFO L225 Difference]: With dead ends: 71251 [2021-11-20 06:07:19,593 INFO L226 Difference]: Without dead ends: 45953 [2021-11-20 06:07:19,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:07:19,725 INFO L933 BasicCegarLoop]: 4263 mSDtfsCounter, 3939 mSDsluCounter, 3840 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 8103 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:19,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3939 Valid, 8103 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 06:07:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45953 states. [2021-11-20 06:07:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45953 to 45853. [2021-11-20 06:07:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45853 states, 32021 states have (on average 1.3222884981730738) internal successors, (42341), 32529 states have internal predecessors, (42341), 11241 states have call successors, (11241), 2591 states have call predecessors, (11241), 2590 states have return successors, (11300), 11114 states have call predecessors, (11300), 11240 states have call successors, (11300) [2021-11-20 06:07:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45853 states to 45853 states and 64882 transitions. [2021-11-20 06:07:23,212 INFO L78 Accepts]: Start accepts. Automaton has 45853 states and 64882 transitions. Word has length 552 [2021-11-20 06:07:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:23,213 INFO L470 AbstractCegarLoop]: Abstraction has 45853 states and 64882 transitions. [2021-11-20 06:07:23,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 4 states have call successors, (151), 3 states have call predecessors, (151), 3 states have return successors, (150), 4 states have call predecessors, (150), 4 states have call successors, (150) [2021-11-20 06:07:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 45853 states and 64882 transitions. [2021-11-20 06:07:23,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2021-11-20 06:07:23,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:23,369 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 11, 11, 11, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:23,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:23,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:07:23,584 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash -794072992, now seen corresponding path program 1 times [2021-11-20 06:07:23,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:07:23,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491085852] [2021-11-20 06:07:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:23,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:07:23,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:07:23,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:07:23,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:07:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:26,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:07:26,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2021-11-20 06:07:28,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2021-11-20 06:07:30,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:07:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491085852] [2021-11-20 06:07:30,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491085852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:30,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:30,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:07:30,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848279684] [2021-11-20 06:07:30,030 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:07:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:07:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:07:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:07:30,032 INFO L87 Difference]: Start difference. First operand 45853 states and 64882 transitions. Second operand has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 2 states have call successors, (175), 2 states have call predecessors, (175), 2 states have return successors, (174), 2 states have call predecessors, (174), 2 states have call successors, (174) [2021-11-20 06:07:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:37,032 INFO L93 Difference]: Finished difference Result 115407 states and 163397 transitions. [2021-11-20 06:07:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:07:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 2 states have call successors, (175), 2 states have call predecessors, (175), 2 states have return successors, (174), 2 states have call predecessors, (174), 2 states have call successors, (174) Word has length 663 [2021-11-20 06:07:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:37,582 INFO L225 Difference]: With dead ends: 115407 [2021-11-20 06:07:37,583 INFO L226 Difference]: Without dead ends: 69605 [2021-11-20 06:07:37,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1321 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:07:37,758 INFO L933 BasicCegarLoop]: 5069 mSDtfsCounter, 5020 mSDsluCounter, 13322 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5020 SdHoareTripleChecker+Valid, 18391 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:37,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5020 Valid, 18391 Invalid, 1536 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:07:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69605 states. [2021-11-20 06:07:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69605 to 45865. [2021-11-20 06:07:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45865 states, 32033 states have (on average 1.3219804576530454) internal successors, (42347), 32541 states have internal predecessors, (42347), 11241 states have call successors, (11241), 2591 states have call predecessors, (11241), 2590 states have return successors, (11300), 11114 states have call predecessors, (11300), 11240 states have call successors, (11300) [2021-11-20 06:07:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45865 states to 45865 states and 64888 transitions. [2021-11-20 06:07:41,098 INFO L78 Accepts]: Start accepts. Automaton has 45865 states and 64888 transitions. Word has length 663 [2021-11-20 06:07:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:41,099 INFO L470 AbstractCegarLoop]: Abstraction has 45865 states and 64888 transitions. [2021-11-20 06:07:41,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 2 states have call successors, (175), 2 states have call predecessors, (175), 2 states have return successors, (174), 2 states have call predecessors, (174), 2 states have call successors, (174) [2021-11-20 06:07:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 45865 states and 64888 transitions. [2021-11-20 06:07:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2021-11-20 06:07:41,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:41,217 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:41,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:07:41,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:07:41,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1315275553, now seen corresponding path program 1 times [2021-11-20 06:07:41,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:07:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888057495] [2021-11-20 06:07:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:41,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:07:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:07:41,440 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:07:41,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:07:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:43,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:07:43,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:07:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1777 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2021-11-20 06:07:45,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1777 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2021-11-20 06:07:47,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:07:47,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888057495] [2021-11-20 06:07:47,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888057495] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:47,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:07:47,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-20 06:07:47,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829803382] [2021-11-20 06:07:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:47,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:07:47,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:07:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:07:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:07:47,695 INFO L87 Difference]: Start difference. First operand 45865 states and 64888 transitions. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) [2021-11-20 06:07:50,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:07:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:52,112 INFO L93 Difference]: Finished difference Result 98891 states and 141009 transitions. [2021-11-20 06:07:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:07:52,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) Word has length 709 [2021-11-20 06:07:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:52,378 INFO L225 Difference]: With dead ends: 98891 [2021-11-20 06:07:52,378 INFO L226 Difference]: Without dead ends: 53077 [2021-11-20 06:07:52,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1418 GetRequests, 1409 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:07:52,515 INFO L933 BasicCegarLoop]: 2985 mSDtfsCounter, 1259 mSDsluCounter, 11178 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 14163 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:52,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1365 Valid, 14163 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 06:07:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53077 states. [2021-11-20 06:07:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53077 to 45925. [2021-11-20 06:07:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45925 states, 32081 states have (on average 1.3214987063994263) internal successors, (42395), 32589 states have internal predecessors, (42395), 11241 states have call successors, (11241), 2591 states have call predecessors, (11241), 2602 states have return successors, (11342), 11126 states have call predecessors, (11342), 11240 states have call successors, (11342) [2021-11-20 06:07:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45925 states to 45925 states and 64978 transitions. [2021-11-20 06:07:55,616 INFO L78 Accepts]: Start accepts. Automaton has 45925 states and 64978 transitions. Word has length 709 [2021-11-20 06:07:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:55,617 INFO L470 AbstractCegarLoop]: Abstraction has 45925 states and 64978 transitions. [2021-11-20 06:07:55,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) [2021-11-20 06:07:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 45925 states and 64978 transitions. [2021-11-20 06:07:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2021-11-20 06:07:55,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:55,718 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:55,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-20 06:07:55,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:07:55,943 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2113028057, now seen corresponding path program 1 times [2021-11-20 06:07:55,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:07:55,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326986949] [2021-11-20 06:07:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:55,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:07:55,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:07:55,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:07:55,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:07:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:07:58,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1781 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-20 06:08:00,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1781 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2021-11-20 06:08:02,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:08:02,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326986949] [2021-11-20 06:08:02,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326986949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:02,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:02,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-20 06:08:02,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265437940] [2021-11-20 06:08:02,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:02,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:08:02,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:08:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:08:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:08:02,355 INFO L87 Difference]: Start difference. First operand 45925 states and 64978 transitions. Second operand has 12 states, 12 states have (on average 36.833333333333336) internal successors, (442), 10 states have internal predecessors, (442), 2 states have call successors, (170), 2 states have call predecessors, (170), 4 states have return successors, (170), 4 states have call predecessors, (170), 2 states have call successors, (170) [2021-11-20 06:08:04,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:08:06,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:08:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:09,444 INFO L93 Difference]: Finished difference Result 95723 states and 135950 transitions. [2021-11-20 06:08:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:08:09,445 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.833333333333336) internal successors, (442), 10 states have internal predecessors, (442), 2 states have call successors, (170), 2 states have call predecessors, (170), 4 states have return successors, (170), 4 states have call predecessors, (170), 2 states have call successors, (170) Word has length 729 [2021-11-20 06:08:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:09,667 INFO L225 Difference]: With dead ends: 95723 [2021-11-20 06:08:09,667 INFO L226 Difference]: Without dead ends: 49849 [2021-11-20 06:08:09,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1448 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:08:09,766 INFO L933 BasicCegarLoop]: 2696 mSDtfsCounter, 2577 mSDsluCounter, 15998 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 426 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 18694 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:09,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2622 Valid, 18694 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 82 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 06:08:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49849 states. [2021-11-20 06:08:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49849 to 45949. [2021-11-20 06:08:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45949 states, 32105 states have (on average 1.321258370970254) internal successors, (42419), 32607 states have internal predecessors, (42419), 11241 states have call successors, (11241), 2591 states have call predecessors, (11241), 2602 states have return successors, (11342), 11132 states have call predecessors, (11342), 11240 states have call successors, (11342) [2021-11-20 06:08:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45949 states to 45949 states and 65002 transitions. [2021-11-20 06:08:12,278 INFO L78 Accepts]: Start accepts. Automaton has 45949 states and 65002 transitions. Word has length 729 [2021-11-20 06:08:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:12,279 INFO L470 AbstractCegarLoop]: Abstraction has 45949 states and 65002 transitions. [2021-11-20 06:08:12,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.833333333333336) internal successors, (442), 10 states have internal predecessors, (442), 2 states have call successors, (170), 2 states have call predecessors, (170), 4 states have return successors, (170), 4 states have call predecessors, (170), 2 states have call successors, (170) [2021-11-20 06:08:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 45949 states and 65002 transitions. [2021-11-20 06:08:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-11-20 06:08:12,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:12,355 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:12,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-20 06:08:12,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:08:12,559 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:12,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1145833885, now seen corresponding path program 1 times [2021-11-20 06:08:12,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:08:12,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388145048] [2021-11-20 06:08:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:12,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:08:12,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:08:12,566 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:08:12,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:08:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:14,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:08:15,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 320 proven. 6 refuted. 0 times theorem prover too weak. 1487 trivial. 0 not checked. [2021-11-20 06:08:17,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2021-11-20 06:08:19,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:08:19,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388145048] [2021-11-20 06:08:19,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388145048] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:19,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:08:19,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-20 06:08:19,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242696272] [2021-11-20 06:08:19,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:19,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:08:19,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:08:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:08:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:08:19,861 INFO L87 Difference]: Start difference. First operand 45949 states and 65002 transitions. Second operand has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 10 states have internal predecessors, (482), 6 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 8 states have call predecessors, (178), 6 states have call successors, (178) [2021-11-20 06:08:24,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:08:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:36,953 INFO L93 Difference]: Finished difference Result 120570 states and 173002 transitions. [2021-11-20 06:08:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:08:36,954 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 10 states have internal predecessors, (482), 6 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 8 states have call predecessors, (178), 6 states have call successors, (178) Word has length 749 [2021-11-20 06:08:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:37,217 INFO L225 Difference]: With dead ends: 120570 [2021-11-20 06:08:37,217 INFO L226 Difference]: Without dead ends: 74672 [2021-11-20 06:08:37,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1493 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2021-11-20 06:08:37,317 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 6277 mSDsluCounter, 31696 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 2004 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 36369 SdHoareTripleChecker+Invalid, 3872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2004 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:37,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 36369 Invalid, 3872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2004 Valid, 1867 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-20 06:08:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74672 states. [2021-11-20 06:08:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74672 to 56896. [2021-11-20 06:08:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56896 states, 39912 states have (on average 1.3217829224293445) internal successors, (52755), 40526 states have internal predecessors, (52755), 13757 states have call successors, (13757), 3195 states have call predecessors, (13757), 3226 states have return successors, (13947), 13648 states have call predecessors, (13947), 13756 states have call successors, (13947) [2021-11-20 06:08:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56896 states to 56896 states and 80459 transitions. [2021-11-20 06:08:40,623 INFO L78 Accepts]: Start accepts. Automaton has 56896 states and 80459 transitions. Word has length 749 [2021-11-20 06:08:40,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:40,624 INFO L470 AbstractCegarLoop]: Abstraction has 56896 states and 80459 transitions. [2021-11-20 06:08:40,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 10 states have internal predecessors, (482), 6 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 8 states have call predecessors, (178), 6 states have call successors, (178) [2021-11-20 06:08:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 56896 states and 80459 transitions. [2021-11-20 06:08:40,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-11-20 06:08:40,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:40,717 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:40,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:40,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:08:40,930 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash -235595233, now seen corresponding path program 1 times [2021-11-20 06:08:40,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:08:40,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306321244] [2021-11-20 06:08:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:40,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:08:40,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:08:40,936 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:08:40,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:08:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:43,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:08:43,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2021-11-20 06:08:45,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-11-20 06:08:47,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:08:47,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306321244] [2021-11-20 06:08:47,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306321244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:47,293 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:47,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:08:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668231397] [2021-11-20 06:08:47,293 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:47,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:08:47,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:08:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:08:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:08:47,296 INFO L87 Difference]: Start difference. First operand 56896 states and 80459 transitions. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 4 states have call successors, (168), 2 states have call predecessors, (168), 2 states have return successors, (167), 4 states have call predecessors, (167), 4 states have call successors, (167) [2021-11-20 06:08:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:49,999 INFO L93 Difference]: Finished difference Result 113658 states and 160740 transitions. [2021-11-20 06:08:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:08:50,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 4 states have call successors, (168), 2 states have call predecessors, (168), 2 states have return successors, (167), 4 states have call predecessors, (167), 4 states have call successors, (167) Word has length 749 [2021-11-20 06:08:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:50,220 INFO L225 Difference]: With dead ends: 113658 [2021-11-20 06:08:50,221 INFO L226 Difference]: Without dead ends: 57160 [2021-11-20 06:08:50,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1497 GetRequests, 1492 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:50,480 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 52 mSDsluCounter, 6701 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 8940 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:50,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 8940 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:08:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57160 states. [2021-11-20 06:08:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57160 to 56944. [2021-11-20 06:08:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56944 states, 39948 states have (on average 1.32119255031541) internal successors, (52779), 40562 states have internal predecessors, (52779), 13769 states have call successors, (13769), 3195 states have call predecessors, (13769), 3226 states have return successors, (13959), 13660 states have call predecessors, (13959), 13768 states have call successors, (13959) [2021-11-20 06:08:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56944 states to 56944 states and 80507 transitions. [2021-11-20 06:08:53,766 INFO L78 Accepts]: Start accepts. Automaton has 56944 states and 80507 transitions. Word has length 749 [2021-11-20 06:08:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:53,768 INFO L470 AbstractCegarLoop]: Abstraction has 56944 states and 80507 transitions. [2021-11-20 06:08:53,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 4 states have call successors, (168), 2 states have call predecessors, (168), 2 states have return successors, (167), 4 states have call predecessors, (167), 4 states have call successors, (167) [2021-11-20 06:08:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 56944 states and 80507 transitions. [2021-11-20 06:08:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-11-20 06:08:54,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:54,178 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:54,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:54,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:08:54,395 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2052465123, now seen corresponding path program 1 times [2021-11-20 06:08:54,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:08:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153343274] [2021-11-20 06:08:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:54,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:08:54,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:08:54,402 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:08:54,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684642b4-bcaf-44fc-95af-d660e690e8d4/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:08:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:57,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 3213 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 06:08:57,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:09:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 341 proven. 6 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2021-11-20 06:09:00,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:09:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-11-20 06:09:02,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:09:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153343274] [2021-11-20 06:09:02,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153343274] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:09:02,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:09:02,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-20 06:09:02,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876906492] [2021-11-20 06:09:02,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:02,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:09:02,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:09:02,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:09:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:09:02,012 INFO L87 Difference]: Start difference. First operand 56944 states and 80507 transitions. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-20 06:09:04,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:09:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:07,916 INFO L93 Difference]: Finished difference Result 116466 states and 165024 transitions. [2021-11-20 06:09:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:09:07,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 749 [2021-11-20 06:09:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:08,180 INFO L225 Difference]: With dead ends: 116466 [2021-11-20 06:09:08,180 INFO L226 Difference]: Without dead ends: 59920 [2021-11-20 06:09:08,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1499 GetRequests, 1487 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:09:08,330 INFO L933 BasicCegarLoop]: 2621 mSDtfsCounter, 558 mSDsluCounter, 7197 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 107 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 9818 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:08,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 9818 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 06:09:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59920 states.