./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:48:42,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:48:42,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:48:42,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:48:42,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:48:42,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:48:42,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:48:42,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:48:42,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:48:42,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:48:42,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:48:42,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:48:42,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:48:42,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:48:42,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:48:42,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:48:42,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:48:42,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:48:42,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:48:42,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:48:42,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:48:42,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:48:42,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:48:42,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:48:42,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:48:42,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:48:42,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:48:42,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:48:42,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:48:42,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:48:42,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:48:42,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:48:42,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:48:42,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:48:42,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:48:42,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:48:42,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:48:42,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:48:42,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:48:42,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:48:42,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:48:42,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:48:42,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:48:42,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:48:42,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:48:42,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:48:42,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:48:42,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:48:42,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:48:42,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:48:42,399 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:48:42,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:48:42,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:48:42,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:48:42,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:48:42,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:48:42,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:48:42,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:48:42,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:48:42,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:48:42,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:48:42,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:48:42,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:48:42,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:48:42,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:48:42,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:48:42,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:48:42,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:48:42,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:48:42,404 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:48:42,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:48:42,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:48:42,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:48:42,405 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_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-11-13 17:48:42,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:48:42,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:48:42,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:48:42,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:48:42,713 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:48:42,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-13 17:48:42,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/data/4663315fd/642b607b12684c5ea50415ee97004548/FLAG3914e46c4 [2021-11-13 17:48:43,818 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:48:43,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-13 17:48:43,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/data/4663315fd/642b607b12684c5ea50415ee97004548/FLAG3914e46c4 [2021-11-13 17:48:44,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/data/4663315fd/642b607b12684c5ea50415ee97004548 [2021-11-13 17:48:44,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:48:44,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:48:44,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:48:44,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:48:44,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:48:44,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:44" (1/1) ... [2021-11-13 17:48:44,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bfb603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:44, skipping insertion in model container [2021-11-13 17:48:44,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:44" (1/1) ... [2021-11-13 17:48:44,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:48:44,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:48:45,524 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-11-13 17:48:46,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:48:46,783 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:48:46,986 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-11-13 17:48:47,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:48:47,342 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:48:47,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47 WrapperNode [2021-11-13 17:48:47,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:48:47,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:48:47,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:48:47,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:48:47,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:47,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:47,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:48:47,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:48:47,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:48:47,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:48:47,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:47,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:47,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:47,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:47,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:48,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:48,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:48,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:48:48,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:48:48,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:48:48,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:48:48,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (1/1) ... [2021-11-13 17:48:48,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:48:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:48:48,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:48:48,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:48:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2021-11-13 17:48:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2021-11-13 17:48:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2021-11-13 17:48:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2021-11-13 17:48:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2021-11-13 17:48:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2021-11-13 17:48:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-13 17:48:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-13 17:48:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:48:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:48:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:48:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:48:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-11-13 17:48:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-11-13 17:48:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2021-11-13 17:48:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2021-11-13 17:48:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2021-11-13 17:48:48,187 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2021-11-13 17:48:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2021-11-13 17:48:48,187 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2021-11-13 17:48:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:48:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:48:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:48:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:48:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2021-11-13 17:48:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2021-11-13 17:48:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2021-11-13 17:48:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2021-11-13 17:48:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 17:48:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 17:48:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-13 17:48:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-13 17:48:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:48:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:48:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:48:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:48:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:48:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:48:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:48:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 17:48:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 17:48:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:48:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 17:48:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 17:48:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2021-11-13 17:48:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2021-11-13 17:48:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 17:48:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2021-11-13 17:48:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2021-11-13 17:48:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2021-11-13 17:48:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2021-11-13 17:48:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:48:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:48:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2021-11-13 17:48:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2021-11-13 17:48:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2021-11-13 17:48:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2021-11-13 17:48:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2021-11-13 17:48:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2021-11-13 17:48:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-13 17:48:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-13 17:48:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 17:48:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 17:48:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 17:48:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 17:48:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2021-11-13 17:48:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2021-11-13 17:48:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 17:48:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 17:48:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-13 17:48:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-13 17:48:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 17:48:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 17:48:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2021-11-13 17:48:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2021-11-13 17:48:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-13 17:48:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-13 17:48:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:48:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:48:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:48:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:48:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2021-11-13 17:48:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2021-11-13 17:48:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2021-11-13 17:48:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2021-11-13 17:48:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2021-11-13 17:48:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2021-11-13 17:48:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:48:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2021-11-13 17:48:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2021-11-13 17:48:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2021-11-13 17:48:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2021-11-13 17:48:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-13 17:48:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-13 17:48:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:48:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:48:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 17:48:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 17:48:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-13 17:48:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-13 17:48:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-13 17:48:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-13 17:48:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-13 17:48:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-13 17:48:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2021-11-13 17:48:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2021-11-13 17:48:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2021-11-13 17:48:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2021-11-13 17:48:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-11-13 17:48:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-11-13 17:48:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:48:48,208 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:48:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:48:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:48:48,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:48:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2021-11-13 17:48:48,209 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2021-11-13 17:48:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-11-13 17:48:48,210 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-11-13 17:48:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:48:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2021-11-13 17:48:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2021-11-13 17:48:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-11-13 17:48:48,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-11-13 17:48:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:48:48,216 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:48:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-13 17:48:48,217 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-13 17:48:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:48:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-13 17:48:48,223 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-13 17:48:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-13 17:48:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-13 17:48:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-13 17:48:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-13 17:48:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 17:48:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 17:48:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2021-11-13 17:48:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2021-11-13 17:48:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 17:48:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 17:48:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-11-13 17:48:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-11-13 17:48:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-13 17:48:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-13 17:48:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:48:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2021-11-13 17:48:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2021-11-13 17:48:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:48:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:48:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-13 17:48:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-13 17:48:49,646 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:49:15,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:49:15,251 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 17:49:15,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:49:15 BoogieIcfgContainer [2021-11-13 17:49:15,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:49:15,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:49:15,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:49:15,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:49:15,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:48:44" (1/3) ... [2021-11-13 17:49:15,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@951722b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:49:15, skipping insertion in model container [2021-11-13 17:49:15,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:47" (2/3) ... [2021-11-13 17:49:15,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@951722b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:49:15, skipping insertion in model container [2021-11-13 17:49:15,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:49:15" (3/3) ... [2021-11-13 17:49:15,265 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-13 17:49:15,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:49:15,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:49:15,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:49:15,381 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:49:15,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:49:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 975 states have (on average 1.3876923076923078) internal successors, (1353), 999 states have internal predecessors, (1353), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) [2021-11-13 17:49:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 17:49:15,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:15,485 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-13 17:49:15,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1941045880, now seen corresponding path program 1 times [2021-11-13 17:49:15,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:15,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758702758] [2021-11-13 17:49:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:15,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:49:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:49:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:49:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:49:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:49:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:49:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:49:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:49:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:49:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-13 17:49:16,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:16,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758702758] [2021-11-13 17:49:16,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758702758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:16,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:49:16,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:49:16,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195827630] [2021-11-13 17:49:16,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:16,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:49:16,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:49:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:49:16,906 INFO L87 Difference]: Start difference. First operand has 1340 states, 975 states have (on average 1.3876923076923078) internal successors, (1353), 999 states have internal predecessors, (1353), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 17:49:19,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:21,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:23,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:33,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:35,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:37,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:39,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:49:41,303 INFO L93 Difference]: Finished difference Result 4269 states and 6520 transitions. [2021-11-13 17:49:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:49:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 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 [2021-11-13 17:49:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:49:41,359 INFO L225 Difference]: With dead ends: 4269 [2021-11-13 17:49:41,359 INFO L226 Difference]: Without dead ends: 2916 [2021-11-13 17:49:41,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:49:41,376 INFO L933 BasicCegarLoop]: 2159 mSDtfsCounter, 2892 mSDsluCounter, 3482 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 1561 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22440.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3143 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 3715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.25ms SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23799.64ms IncrementalHoareTripleChecker+Time [2021-11-13 17:49:41,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3143 Valid, 5641 Invalid, 3715 Unknown, 0 Unchecked, 101.25ms Time], IncrementalHoareTripleChecker [1561 Valid, 2147 Invalid, 7 Unknown, 0 Unchecked, 23799.64ms Time] [2021-11-13 17:49:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-11-13 17:49:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2602. [2021-11-13 17:49:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1902 states have (on average 1.3796004206098844) internal successors, (2624), 1936 states have internal predecessors, (2624), 567 states have call successors, (567), 133 states have call predecessors, (567), 132 states have return successors, (566), 564 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-13 17:49:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3757 transitions. [2021-11-13 17:49:41,660 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3757 transitions. Word has length 80 [2021-11-13 17:49:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:41,661 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3757 transitions. [2021-11-13 17:49:41,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 17:49:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3757 transitions. [2021-11-13 17:49:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 17:49:41,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:41,669 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-13 17:49:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:49:41,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -227298957, now seen corresponding path program 1 times [2021-11-13 17:49:41,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:41,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314396190] [2021-11-13 17:49:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:41,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:49:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:49:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:49:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:49:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:49:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:49:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:49:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:49:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:49:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:49:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:49:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 17:49:42,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:42,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314396190] [2021-11-13 17:49:42,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314396190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:42,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:49:42,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:49:42,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561945681] [2021-11-13 17:49:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:42,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:49:42,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:49:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:49:42,629 INFO L87 Difference]: Start difference. First operand 2602 states and 3757 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:49:44,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:46,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:57,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:59,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:01,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:03,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:05,294 INFO L93 Difference]: Finished difference Result 8375 states and 12441 transitions. [2021-11-13 17:50:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:50:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2021-11-13 17:50:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:05,346 INFO L225 Difference]: With dead ends: 8375 [2021-11-13 17:50:05,346 INFO L226 Difference]: Without dead ends: 5787 [2021-11-13 17:50:05,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:50:05,364 INFO L933 BasicCegarLoop]: 2103 mSDtfsCounter, 2990 mSDsluCounter, 7300 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 1570 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20892.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 9403 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.85ms SdHoareTripleChecker+Time, 1570 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22108.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:05,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3251 Valid, 9403 Invalid, 4550 Unknown, 0 Unchecked, 81.85ms Time], IncrementalHoareTripleChecker [1570 Valid, 2974 Invalid, 6 Unknown, 0 Unchecked, 22108.69ms Time] [2021-11-13 17:50:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2021-11-13 17:50:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5197. [2021-11-13 17:50:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 3803 states have (on average 1.3807520378648435) internal successors, (5251), 3873 states have internal predecessors, (5251), 1123 states have call successors, (1123), 265 states have call predecessors, (1123), 270 states have return successors, (1143), 1122 states have call predecessors, (1143), 1122 states have call successors, (1143) [2021-11-13 17:50:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7517 transitions. [2021-11-13 17:50:05,671 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7517 transitions. Word has length 96 [2021-11-13 17:50:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:05,672 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7517 transitions. [2021-11-13 17:50:05,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:50:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7517 transitions. [2021-11-13 17:50:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 17:50:05,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:05,686 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:05,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:50:05,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:05,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash 415887363, now seen corresponding path program 1 times [2021-11-13 17:50:05,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:05,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201198037] [2021-11-13 17:50:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:05,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:50:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:50:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:50:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:50:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:50:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:50:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 17:50:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:50:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:50:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 17:50:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 17:50:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 17:50:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-13 17:50:06,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:06,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201198037] [2021-11-13 17:50:06,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201198037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:06,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:06,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:50:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505873522] [2021-11-13 17:50:06,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:06,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:50:06,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:50:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:50:06,502 INFO L87 Difference]: Start difference. First operand 5197 states and 7517 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:50:08,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:17,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:19,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:22,944 INFO L93 Difference]: Finished difference Result 13329 states and 19600 transitions. [2021-11-13 17:50:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:50:22,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2021-11-13 17:50:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:23,020 INFO L225 Difference]: With dead ends: 13329 [2021-11-13 17:50:23,021 INFO L226 Difference]: Without dead ends: 8156 [2021-11-13 17:50:23,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:50:23,047 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 1270 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 537 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14824.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 6033 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.54ms SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15901.86ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:23,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 6033 Invalid, 3274 Unknown, 0 Unchecked, 44.54ms Time], IncrementalHoareTripleChecker [537 Valid, 2734 Invalid, 3 Unknown, 0 Unchecked, 15901.86ms Time] [2021-11-13 17:50:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-11-13 17:50:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7456. [2021-11-13 17:50:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 5495 states have (on average 1.3777979981801638) internal successors, (7571), 5581 states have internal predecessors, (7571), 1550 states have call successors, (1550), 397 states have call predecessors, (1550), 410 states have return successors, (1586), 1549 states have call predecessors, (1586), 1549 states have call successors, (1586) [2021-11-13 17:50:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 10707 transitions. [2021-11-13 17:50:23,574 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 10707 transitions. Word has length 144 [2021-11-13 17:50:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:23,575 INFO L470 AbstractCegarLoop]: Abstraction has 7456 states and 10707 transitions. [2021-11-13 17:50:23,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:50:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 10707 transitions. [2021-11-13 17:50:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-13 17:50:23,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:23,610 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-13 17:50:23,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:50:23,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2082112872, now seen corresponding path program 1 times [2021-11-13 17:50:23,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:23,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129214745] [2021-11-13 17:50:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:23,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:50:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:50:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:50:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:50:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:50:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:50:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 17:50:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 17:50:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:50:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:50:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:50:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-13 17:50:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 17:50:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 17:50:24,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:24,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129214745] [2021-11-13 17:50:24,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129214745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:24,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:24,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:50:24,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385808605] [2021-11-13 17:50:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:24,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:50:24,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:24,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:50:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:50:24,553 INFO L87 Difference]: Start difference. First operand 7456 states and 10707 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:50:26,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:28,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:30,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:41,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:43,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:45,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:47,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:49,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:52,811 INFO L93 Difference]: Finished difference Result 19699 states and 28876 transitions. [2021-11-13 17:50:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:50:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2021-11-13 17:50:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:52,926 INFO L225 Difference]: With dead ends: 19699 [2021-11-13 17:50:52,926 INFO L226 Difference]: Without dead ends: 12278 [2021-11-13 17:50:52,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:50:52,960 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 2533 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 3351 mSolverCounterSat, 1753 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26019.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 7925 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.15ms SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 3351 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27551.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:52,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2741 Valid, 7925 Invalid, 5112 Unknown, 0 Unchecked, 56.15ms Time], IncrementalHoareTripleChecker [1753 Valid, 3351 Invalid, 8 Unknown, 0 Unchecked, 27551.87ms Time] [2021-11-13 17:50:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12278 states. [2021-11-13 17:50:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12278 to 10906. [2021-11-13 17:50:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10906 states, 8002 states have (on average 1.3759060234941265) internal successors, (11010), 8150 states have internal predecessors, (11010), 2278 states have call successors, (2278), 606 states have call predecessors, (2278), 625 states have return successors, (2324), 2277 states have call predecessors, (2324), 2277 states have call successors, (2324) [2021-11-13 17:50:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10906 states to 10906 states and 15612 transitions. [2021-11-13 17:50:53,645 INFO L78 Accepts]: Start accepts. Automaton has 10906 states and 15612 transitions. Word has length 156 [2021-11-13 17:50:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:53,646 INFO L470 AbstractCegarLoop]: Abstraction has 10906 states and 15612 transitions. [2021-11-13 17:50:53,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:50:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10906 states and 15612 transitions. [2021-11-13 17:50:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 17:50:53,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:53,672 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-11-13 17:50:53,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:50:53,673 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash 347899775, now seen corresponding path program 1 times [2021-11-13 17:50:53,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:53,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493073839] [2021-11-13 17:50:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:53,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:50:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:50:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:50:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:50:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:50:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:50:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:50:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:50:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:50:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:50:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:50:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:50:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:50:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-13 17:50:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-13 17:50:54,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:54,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493073839] [2021-11-13 17:50:54,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493073839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:54,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:54,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:50:54,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470593163] [2021-11-13 17:50:54,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:54,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:50:54,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:50:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:50:54,578 INFO L87 Difference]: Start difference. First operand 10906 states and 15612 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:50:56,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:03,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:05,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:07,086 INFO L93 Difference]: Finished difference Result 23018 states and 33604 transitions. [2021-11-13 17:51:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2021-11-13 17:51:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:07,161 INFO L225 Difference]: With dead ends: 23018 [2021-11-13 17:51:07,162 INFO L226 Difference]: Without dead ends: 12151 [2021-11-13 17:51:07,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:07,212 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 647 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 667 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11373.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.62ms SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12097.70ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:07,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 5297 Invalid, 2278 Unknown, 0 Unchecked, 27.62ms Time], IncrementalHoareTripleChecker [667 Valid, 1608 Invalid, 3 Unknown, 0 Unchecked, 12097.70ms Time] [2021-11-13 17:51:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2021-11-13 17:51:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 10914. [2021-11-13 17:51:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 8010 states have (on average 1.3750312109862672) internal successors, (11014), 8158 states have internal predecessors, (11014), 2278 states have call successors, (2278), 606 states have call predecessors, (2278), 625 states have return successors, (2324), 2277 states have call predecessors, (2324), 2277 states have call successors, (2324) [2021-11-13 17:51:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 15616 transitions. [2021-11-13 17:51:07,868 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 15616 transitions. Word has length 168 [2021-11-13 17:51:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:07,870 INFO L470 AbstractCegarLoop]: Abstraction has 10914 states and 15616 transitions. [2021-11-13 17:51:07,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:51:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 15616 transitions. [2021-11-13 17:51:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 17:51:07,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:07,892 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-11-13 17:51:07,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:51:07,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1038303619, now seen corresponding path program 1 times [2021-11-13 17:51:07,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:07,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086634888] [2021-11-13 17:51:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:07,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:51:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:51:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:51:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:51:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:51:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:51:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:51:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:51:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:51:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:51:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:51:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:51:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:51:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-13 17:51:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-13 17:51:09,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:09,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086634888] [2021-11-13 17:51:09,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086634888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:09,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:09,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:51:09,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624868417] [2021-11-13 17:51:09,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:09,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:51:09,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:51:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:09,049 INFO L87 Difference]: Start difference. First operand 10914 states and 15616 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:51:11,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:22,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:24,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:26,719 INFO L93 Difference]: Finished difference Result 22954 states and 33512 transitions. [2021-11-13 17:51:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:51:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2021-11-13 17:51:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:26,791 INFO L225 Difference]: With dead ends: 22954 [2021-11-13 17:51:26,792 INFO L226 Difference]: Without dead ends: 12079 [2021-11-13 17:51:26,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:51:26,832 INFO L933 BasicCegarLoop]: 1829 mSDtfsCounter, 385 mSDsluCounter, 7332 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 356 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15906.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 9161 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.31ms SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16984.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:26,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 9161 Invalid, 3407 Unknown, 0 Unchecked, 54.31ms Time], IncrementalHoareTripleChecker [356 Valid, 3048 Invalid, 3 Unknown, 0 Unchecked, 16984.83ms Time] [2021-11-13 17:51:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12079 states. [2021-11-13 17:51:27,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12079 to 10914. [2021-11-13 17:51:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 8002 states have (on average 1.3734066483379155) internal successors, (10990), 8154 states have internal predecessors, (10990), 2278 states have call successors, (2278), 606 states have call predecessors, (2278), 633 states have return successors, (2335), 2281 states have call predecessors, (2335), 2277 states have call successors, (2335) [2021-11-13 17:51:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 15603 transitions. [2021-11-13 17:51:27,458 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 15603 transitions. Word has length 168 [2021-11-13 17:51:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:27,459 INFO L470 AbstractCegarLoop]: Abstraction has 10914 states and 15603 transitions. [2021-11-13 17:51:27,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:51:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 15603 transitions. [2021-11-13 17:51:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 17:51:27,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:27,482 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 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] [2021-11-13 17:51:27,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:51:27,483 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash 430896940, now seen corresponding path program 1 times [2021-11-13 17:51:27,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:27,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060357420] [2021-11-13 17:51:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:27,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:51:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:51:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:51:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:51:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:51:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:51:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:51:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:51:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:51:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:51:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:51:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:51:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:51:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:51:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:51:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-13 17:51:28,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:28,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060357420] [2021-11-13 17:51:28,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060357420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:28,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922843180] [2021-11-13 17:51:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:28,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:28,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:28,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:28,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:51:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:31,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 5729 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:31,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 17:51:31,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:31,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922843180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:31,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:31,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-11-13 17:51:31,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727835774] [2021-11-13 17:51:31,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:31,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:31,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:31,771 INFO L87 Difference]: Start difference. First operand 10914 states and 15603 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 17:51:33,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:35,821 INFO L93 Difference]: Finished difference Result 32663 states and 46708 transitions. [2021-11-13 17:51:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 175 [2021-11-13 17:51:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:35,992 INFO L225 Difference]: With dead ends: 32663 [2021-11-13 17:51:35,992 INFO L226 Difference]: Without dead ends: 32650 [2021-11-13 17:51:36,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:36,019 INFO L933 BasicCegarLoop]: 4065 mSDtfsCounter, 3687 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3178.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3687 SdHoareTripleChecker+Valid, 7546 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.91ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3443.70ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:36,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3687 Valid, 7546 Invalid, 614 Unknown, 0 Unchecked, 17.91ms Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 1 Unknown, 0 Unchecked, 3443.70ms Time] [2021-11-13 17:51:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32650 states. [2021-11-13 17:51:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32650 to 32614. [2021-11-13 17:51:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32614 states, 23910 states have (on average 1.374487662066081) internal successors, (32864), 24382 states have internal predecessors, (32864), 6810 states have call successors, (6810), 1810 states have call predecessors, (6810), 1893 states have return successors, (6983), 6805 states have call predecessors, (6983), 6809 states have call successors, (6983) [2021-11-13 17:51:37,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32614 states to 32614 states and 46657 transitions. [2021-11-13 17:51:37,832 INFO L78 Accepts]: Start accepts. Automaton has 32614 states and 46657 transitions. Word has length 175 [2021-11-13 17:51:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:37,833 INFO L470 AbstractCegarLoop]: Abstraction has 32614 states and 46657 transitions. [2021-11-13 17:51:37,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 17:51:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32614 states and 46657 transitions. [2021-11-13 17:51:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 17:51:37,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:37,884 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 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] [2021-11-13 17:51:37,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:38,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:38,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1157450962, now seen corresponding path program 1 times [2021-11-13 17:51:38,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:38,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744240463] [2021-11-13 17:51:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:38,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:51:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:51:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:51:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:51:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:51:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:51:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:51:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:51:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:51:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:51:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:51:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:51:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:51:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:51:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:51:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-13 17:51:39,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:39,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744240463] [2021-11-13 17:51:39,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744240463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:39,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:39,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:51:39,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123608957] [2021-11-13 17:51:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:39,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:39,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:39,188 INFO L87 Difference]: Start difference. First operand 32614 states and 46657 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-13 17:51:41,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:43,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:47,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:53,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:55,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:58,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:00,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:02,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:04,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:06,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:08,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:11,048 INFO L93 Difference]: Finished difference Result 80433 states and 119792 transitions. [2021-11-13 17:52:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:52:11,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 175 [2021-11-13 17:52:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:11,525 INFO L225 Difference]: With dead ends: 80433 [2021-11-13 17:52:11,525 INFO L226 Difference]: Without dead ends: 47858 [2021-11-13 17:52:11,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:52:11,637 INFO L933 BasicCegarLoop]: 2498 mSDtfsCounter, 3192 mSDsluCounter, 4497 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 1460 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29007.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 6995 SdHoareTripleChecker+Invalid, 3497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.43ms SdHoareTripleChecker+Time, 1460 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30318.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:11,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3425 Valid, 6995 Invalid, 3497 Unknown, 0 Unchecked, 45.43ms Time], IncrementalHoareTripleChecker [1460 Valid, 2027 Invalid, 10 Unknown, 0 Unchecked, 30318.06ms Time] [2021-11-13 17:52:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47858 states. [2021-11-13 17:52:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47858 to 32590. [2021-11-13 17:52:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32590 states, 23886 states have (on average 1.3738591643640625) internal successors, (32816), 24366 states have internal predecessors, (32816), 6810 states have call successors, (6810), 1810 states have call predecessors, (6810), 1893 states have return successors, (6983), 6797 states have call predecessors, (6983), 6809 states have call successors, (6983) [2021-11-13 17:52:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32590 states to 32590 states and 46609 transitions. [2021-11-13 17:52:14,279 INFO L78 Accepts]: Start accepts. Automaton has 32590 states and 46609 transitions. Word has length 175 [2021-11-13 17:52:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:14,280 INFO L470 AbstractCegarLoop]: Abstraction has 32590 states and 46609 transitions. [2021-11-13 17:52:14,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-13 17:52:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 32590 states and 46609 transitions. [2021-11-13 17:52:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 17:52:14,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:14,342 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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] [2021-11-13 17:52:14,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:52:14,343 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash 209772948, now seen corresponding path program 1 times [2021-11-13 17:52:14,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:14,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303554385] [2021-11-13 17:52:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:14,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:52:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:52:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:52:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:52:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:52:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:52:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:52:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:52:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:52:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:52:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:52:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:52:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:52:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 17:52:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 17:52:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:52:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:52:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:52:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-13 17:52:15,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:15,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303554385] [2021-11-13 17:52:15,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303554385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:15,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:15,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:52:15,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481650653] [2021-11-13 17:52:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:15,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:52:15,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:52:15,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:52:15,721 INFO L87 Difference]: Start difference. First operand 32590 states and 46609 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:52:17,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:19,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:22,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:24,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:33,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:35,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:37,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:40,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:42,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:45,906 INFO L93 Difference]: Finished difference Result 82777 states and 120555 transitions. [2021-11-13 17:52:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:52:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 180 [2021-11-13 17:52:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:46,130 INFO L225 Difference]: With dead ends: 82777 [2021-11-13 17:52:46,130 INFO L226 Difference]: Without dead ends: 50226 [2021-11-13 17:52:46,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:52:46,354 INFO L933 BasicCegarLoop]: 2133 mSDtfsCounter, 3622 mSDsluCounter, 3750 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 2485 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26722.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 5391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.96ms SdHoareTripleChecker+Time, 2485 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28241.36ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:46,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3925 Valid, 5883 Invalid, 5391 Unknown, 0 Unchecked, 48.96ms Time], IncrementalHoareTripleChecker [2485 Valid, 2897 Invalid, 9 Unknown, 0 Unchecked, 28241.36ms Time] [2021-11-13 17:52:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50226 states. [2021-11-13 17:52:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50226 to 44558. [2021-11-13 17:52:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44558 states, 32660 states have (on average 1.3682180036742193) internal successors, (44686), 33352 states have internal predecessors, (44686), 9188 states have call successors, (9188), 2558 states have call predecessors, (9188), 2709 states have return successors, (9495), 9217 states have call predecessors, (9495), 9187 states have call successors, (9495) [2021-11-13 17:52:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44558 states to 44558 states and 63369 transitions. [2021-11-13 17:52:48,973 INFO L78 Accepts]: Start accepts. Automaton has 44558 states and 63369 transitions. Word has length 180 [2021-11-13 17:52:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:48,974 INFO L470 AbstractCegarLoop]: Abstraction has 44558 states and 63369 transitions. [2021-11-13 17:52:48,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:52:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 44558 states and 63369 transitions. [2021-11-13 17:52:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 17:52:49,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:49,015 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:52:49,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:52:49,016 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1082606041, now seen corresponding path program 1 times [2021-11-13 17:52:49,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:49,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481992454] [2021-11-13 17:52:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:49,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:52:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:52:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:52:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:52:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:52:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:52:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:52:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:52:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:52:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:52:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:52:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:52:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:52:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:52:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:52:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:52:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:52:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:52:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-13 17:52:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-13 17:52:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2021-11-13 17:52:50,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:50,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481992454] [2021-11-13 17:52:50,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481992454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:50,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:50,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:52:50,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381018302] [2021-11-13 17:52:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:50,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:52:50,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:52:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:52:50,508 INFO L87 Difference]: Start difference. First operand 44558 states and 63369 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 17:52:52,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:54,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:52:56,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:01,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:02,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:06,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:08,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:10,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:12,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:15,580 INFO L93 Difference]: Finished difference Result 71910 states and 103617 transitions. [2021-11-13 17:53:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:53:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 191 [2021-11-13 17:53:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:15,713 INFO L225 Difference]: With dead ends: 71910 [2021-11-13 17:53:15,713 INFO L226 Difference]: Without dead ends: 27251 [2021-11-13 17:53:15,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:53:15,799 INFO L933 BasicCegarLoop]: 2212 mSDtfsCounter, 2596 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 1472 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22599.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 4966 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.84ms SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23780.22ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:15,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2825 Valid, 4966 Invalid, 3153 Unknown, 0 Unchecked, 31.84ms Time], IncrementalHoareTripleChecker [1472 Valid, 1674 Invalid, 7 Unknown, 0 Unchecked, 23780.22ms Time] [2021-11-13 17:53:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27251 states. [2021-11-13 17:53:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27251 to 24612. [2021-11-13 17:53:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24612 states, 18079 states have (on average 1.365230377786382) internal successors, (24682), 18437 states have internal predecessors, (24682), 5028 states have call successors, (5028), 1423 states have call predecessors, (5028), 1504 states have return successors, (5195), 5044 states have call predecessors, (5195), 5027 states have call successors, (5195) [2021-11-13 17:53:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24612 states to 24612 states and 34905 transitions. [2021-11-13 17:53:17,274 INFO L78 Accepts]: Start accepts. Automaton has 24612 states and 34905 transitions. Word has length 191 [2021-11-13 17:53:17,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:17,275 INFO L470 AbstractCegarLoop]: Abstraction has 24612 states and 34905 transitions. [2021-11-13 17:53:17,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 17:53:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 24612 states and 34905 transitions. [2021-11-13 17:53:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-13 17:53:17,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:17,313 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 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] [2021-11-13 17:53:17,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:53:17,313 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1392335135, now seen corresponding path program 1 times [2021-11-13 17:53:17,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:17,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361907669] [2021-11-13 17:53:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:17,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:53:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:53:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:53:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:53:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:53:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:53:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:53:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:53:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:53:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:53:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:53:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:53:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:53:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:53:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:53:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:53:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:53:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:53:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:53:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:53:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 17:53:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:53:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-13 17:53:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-13 17:53:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-13 17:53:19,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:19,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361907669] [2021-11-13 17:53:19,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361907669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:19,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:19,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:53:19,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899031007] [2021-11-13 17:53:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:19,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:53:19,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:53:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:53:19,096 INFO L87 Difference]: Start difference. First operand 24612 states and 34905 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-13 17:53:21,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:28,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:31,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:33,038 INFO L93 Difference]: Finished difference Result 27227 states and 39997 transitions. [2021-11-13 17:53:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:53:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 214 [2021-11-13 17:53:33,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:33,146 INFO L225 Difference]: With dead ends: 27227 [2021-11-13 17:53:33,146 INFO L226 Difference]: Without dead ends: 27219 [2021-11-13 17:53:33,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:53:33,159 INFO L933 BasicCegarLoop]: 1870 mSDtfsCounter, 575 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 672 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12254.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 5290 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.97ms SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13049.10ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:33,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 5290 Invalid, 2460 Unknown, 0 Unchecked, 26.97ms Time], IncrementalHoareTripleChecker [672 Valid, 1785 Invalid, 3 Unknown, 0 Unchecked, 13049.10ms Time] [2021-11-13 17:53:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27219 states. [2021-11-13 17:53:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27219 to 24613. [2021-11-13 17:53:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24613 states, 18080 states have (on average 1.3652101769911504) internal successors, (24683), 18438 states have internal predecessors, (24683), 5028 states have call successors, (5028), 1423 states have call predecessors, (5028), 1504 states have return successors, (5195), 5044 states have call predecessors, (5195), 5027 states have call successors, (5195) [2021-11-13 17:53:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24613 states to 24613 states and 34906 transitions. [2021-11-13 17:53:34,303 INFO L78 Accepts]: Start accepts. Automaton has 24613 states and 34906 transitions. Word has length 214 [2021-11-13 17:53:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:34,303 INFO L470 AbstractCegarLoop]: Abstraction has 24613 states and 34906 transitions. [2021-11-13 17:53:34,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-13 17:53:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 24613 states and 34906 transitions. [2021-11-13 17:53:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-13 17:53:34,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:34,334 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 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] [2021-11-13 17:53:34,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:53:34,335 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 113218526, now seen corresponding path program 1 times [2021-11-13 17:53:34,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:34,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188808950] [2021-11-13 17:53:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:34,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:53:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:53:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:53:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:53:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:53:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:53:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:53:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:53:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:53:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:53:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:53:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:53:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:53:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:53:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:53:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:53:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:53:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:53:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:53:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:53:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 17:53:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:53:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-13 17:53:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-13 17:53:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-13 17:53:35,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:35,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188808950] [2021-11-13 17:53:35,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188808950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:53:35,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525563717] [2021-11-13 17:53:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:35,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:53:35,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:53:35,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:53:35,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:53:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:38,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 5868 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:53:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:53:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-13 17:53:39,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:53:39,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525563717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:39,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:53:39,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 17:53:39,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722821421] [2021-11-13 17:53:39,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:39,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:53:39,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:53:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:53:39,023 INFO L87 Difference]: Start difference. First operand 24613 states and 34906 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:53:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:40,386 INFO L93 Difference]: Finished difference Result 46408 states and 66177 transitions. [2021-11-13 17:53:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:53:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 217 [2021-11-13 17:53:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:40,450 INFO L225 Difference]: With dead ends: 46408 [2021-11-13 17:53:40,450 INFO L226 Difference]: Without dead ends: 24451 [2021-11-13 17:53:40,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:53:40,517 INFO L933 BasicCegarLoop]: 1868 mSDtfsCounter, 1806 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.66ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.65ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:40,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 1868 Invalid, 29 Unknown, 0 Unchecked, 5.66ms Time], IncrementalHoareTripleChecker [14 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 66.65ms Time] [2021-11-13 17:53:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24451 states. [2021-11-13 17:53:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24451 to 24451. [2021-11-13 17:53:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24451 states, 17990 states have (on average 1.3500277932184548) internal successors, (24287), 18330 states have internal predecessors, (24287), 4956 states have call successors, (4956), 1423 states have call predecessors, (4956), 1504 states have return successors, (5123), 4972 states have call predecessors, (5123), 4955 states have call successors, (5123) [2021-11-13 17:53:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24451 states to 24451 states and 34366 transitions. [2021-11-13 17:53:41,560 INFO L78 Accepts]: Start accepts. Automaton has 24451 states and 34366 transitions. Word has length 217 [2021-11-13 17:53:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:41,561 INFO L470 AbstractCegarLoop]: Abstraction has 24451 states and 34366 transitions. [2021-11-13 17:53:41,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:53:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 24451 states and 34366 transitions. [2021-11-13 17:53:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-13 17:53:41,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:41,591 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 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] [2021-11-13 17:53:41,806 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2021-11-13 17:53:41,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:53:41,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 17:53:41,808 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -665733278, now seen corresponding path program 1 times [2021-11-13 17:53:41,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:41,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867340964] [2021-11-13 17:53:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:41,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:53:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:53:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:53:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:53:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:53:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 17:53:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:53:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:53:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:53:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:53:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:53:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:53:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:53:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:53:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:53:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:53:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:53:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:53:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:53:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:53:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 17:53:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:53:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-13 17:53:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-13 17:53:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-13 17:53:43,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:43,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867340964] [2021-11-13 17:53:43,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867340964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:53:43,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208939009] [2021-11-13 17:53:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:43,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:53:43,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:53:43,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:53:43,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5902128-0c0a-4041-887b-157b898bbcfb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process