./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa --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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:24:51,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:24:51,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:24:51,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:24:51,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:24:51,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:24:51,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:24:51,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:24:51,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:24:51,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:24:51,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:24:51,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:24:51,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:24:51,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:24:51,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:24:51,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:24:51,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:24:51,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:24:51,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:24:51,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:24:51,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:24:51,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:24:51,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:24:51,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:24:51,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:24:51,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:24:51,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:24:51,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:24:51,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:24:51,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:24:51,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:24:51,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:24:51,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:24:51,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:24:51,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:24:51,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:24:51,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:24:51,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:24:51,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:24:51,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:24:51,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:24:51,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:24:51,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:24:51,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:24:51,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:24:51,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:24:51,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:24:51,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:24:51,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:24:51,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:24:51,406 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:24:51,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:24:51,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:24:51,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:24:51,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:24:51,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:24:51,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:24:51,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:24:51,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:24:51,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:24:51,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:24:51,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:24:51,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:24:51,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:24:51,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:24:51,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:24:51,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:24:51,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:24:51,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:24:51,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:24:51,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:24:51,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:24:51,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:24:51,418 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_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-12-06 19:24:51,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:24:51,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:24:51,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:24:51,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:24:51,647 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:24:51,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-06 19:24:51,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/data/c342ee06e/2aa663f3f4834b93a790a3802cd1b701/FLAGf2f889de6 [2021-12-06 19:24:52,345 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:24:52,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-06 19:24:52,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/data/c342ee06e/2aa663f3f4834b93a790a3802cd1b701/FLAGf2f889de6 [2021-12-06 19:24:52,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/data/c342ee06e/2aa663f3f4834b93a790a3802cd1b701 [2021-12-06 19:24:52,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:24:52,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:24:52,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:24:52,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:24:52,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:24:52,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:24:52" (1/1) ... [2021-12-06 19:24:52,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51042b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:52, skipping insertion in model container [2021-12-06 19:24:52,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:24:52" (1/1) ... [2021-12-06 19:24:52,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:24:52,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:24:53,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-12-06 19:24:54,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:24:54,673 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:24:54,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-12-06 19:24:55,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:24:55,100 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:24:55,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55 WrapperNode [2021-12-06 19:24:55,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:24:55,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:24:55,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:24:55,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:24:55,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,335 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2021-12-06 19:24:55,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:24:55,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:24:55,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:24:55,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:24:55,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:24:55,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:24:55,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:24:55,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:24:55,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (1/1) ... [2021-12-06 19:24:55,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:24:55,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:55,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:24:55,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bb1224-de3b-47b4-9f7b-b061bb3df2c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:24:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-12-06 19:24:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-12-06 19:24:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-12-06 19:24:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-12-06 19:24:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-12-06 19:24:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-12-06 19:24:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-12-06 19:24:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-12-06 19:24:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-06 19:24:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-06 19:24:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2021-12-06 19:24:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2021-12-06 19:24:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-12-06 19:24:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-12-06 19:24:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 19:24:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 19:24:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-06 19:24:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-06 19:24:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-12-06 19:24:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-12-06 19:24:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-12-06 19:24:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-12-06 19:24:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2021-12-06 19:24:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2021-12-06 19:24:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-06 19:24:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-06 19:24:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-12-06 19:24:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-12-06 19:24:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 19:24:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 19:24:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-06 19:24:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-06 19:24:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-12-06 19:24:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-12-06 19:24:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:24:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:24:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-06 19:24:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-06 19:24:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-06 19:24:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-06 19:24:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-12-06 19:24:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-12-06 19:24:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2021-12-06 19:24:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2021-12-06 19:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-12-06 19:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-12-06 19:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-06 19:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-06 19:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 19:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 19:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-12-06 19:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-12-06 19:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-12-06 19:24:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-12-06 19:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-12-06 19:24:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-12-06 19:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-06 19:24:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-06 19:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-12-06 19:24:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-12-06 19:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 19:24:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 19:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:24:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-12-06 19:24:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-12-06 19:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-12-06 19:24:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-12-06 19:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-12-06 19:24:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-12-06 19:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-12-06 19:24:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-12-06 19:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2021-12-06 19:24:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2021-12-06 19:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2021-12-06 19:24:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2021-12-06 19:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-06 19:24:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-06 19:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-06 19:24:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-06 19:24:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 19:24:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 19:24:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:24:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 19:24:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 19:24:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-12-06 19:24:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-12-06 19:24:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-12-06 19:24:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-12-06 19:24:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-12-06 19:24:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-12-06 19:24:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-12-06 19:24:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-12-06 19:24:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-06 19:24:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-06 19:24:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:24:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 19:24:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 19:24:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-06 19:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-12-06 19:24:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-12-06 19:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-12-06 19:24:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-12-06 19:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-06 19:24:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-06 19:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 19:24:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 19:24:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-06 19:24:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-06 19:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-12-06 19:24:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-12-06 19:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2021-12-06 19:24:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2021-12-06 19:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 19:24:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 19:24:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-06 19:24:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-06 19:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 19:24:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 19:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-12-06 19:24:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-12-06 19:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-12-06 19:24:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-12-06 19:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 19:24:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 19:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 19:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 19:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 19:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 19:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-12-06 19:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-12-06 19:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-06 19:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-06 19:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-06 19:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-06 19:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 19:24:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 19:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-12-06 19:24:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-12-06 19:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-12-06 19:24:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-12-06 19:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 19:24:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 19:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-12-06 19:24:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-12-06 19:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 19:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 19:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-12-06 19:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-12-06 19:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-12-06 19:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-12-06 19:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-12-06 19:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-12-06 19:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-12-06 19:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-12-06 19:24:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-12-06 19:24:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-12-06 19:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-12-06 19:24:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-12-06 19:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-06 19:24:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-06 19:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-12-06 19:24:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-12-06 19:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-06 19:24:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-06 19:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-12-06 19:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-12-06 19:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-12-06 19:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-12-06 19:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 19:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 19:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-06 19:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-06 19:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-06 19:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-06 19:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-12-06 19:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-12-06 19:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 19:24:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 19:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-12-06 19:24:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-12-06 19:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-12-06 19:24:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-12-06 19:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-06 19:24:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-06 19:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:24:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2021-12-06 19:24:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2021-12-06 19:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-12-06 19:24:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-12-06 19:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-12-06 19:24:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-12-06 19:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 19:24:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 19:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-12-06 19:24:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-12-06 19:24:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-12-06 19:24:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-12-06 19:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2021-12-06 19:24:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2021-12-06 19:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-12-06 19:24:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-12-06 19:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 19:24:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 19:24:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 19:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2021-12-06 19:24:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2021-12-06 19:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-12-06 19:24:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-12-06 19:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 19:24:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 19:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 19:24:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 19:24:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-12-06 19:24:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-12-06 19:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 19:24:55,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 19:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-12-06 19:24:55,644 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-12-06 19:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2021-12-06 19:24:55,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2021-12-06 19:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-12-06 19:24:55,644 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-12-06 19:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-12-06 19:24:55,644 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-12-06 19:24:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-12-06 19:24:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-12-06 19:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-06 19:24:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-06 19:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-06 19:24:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-06 19:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-12-06 19:24:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-12-06 19:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 19:24:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 19:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-12-06 19:24:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-12-06 19:24:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 19:24:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 19:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-06 19:24:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-06 19:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:24:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-06 19:24:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-06 19:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-12-06 19:24:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-12-06 19:24:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 19:24:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 19:24:56,169 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:24:56,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:24:56,498 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 19:24:56,983 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2021-12-06 19:25:02,392 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:25:02,411 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:25:02,412 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:25:02,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:25:02 BoogieIcfgContainer [2021-12-06 19:25:02,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:25:02,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:25:02,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:25:02,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:25:02,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:24:52" (1/3) ... [2021-12-06 19:25:02,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4550fc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:25:02, skipping insertion in model container [2021-12-06 19:25:02,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:24:55" (2/3) ... [2021-12-06 19:25:02,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4550fc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:25:02, skipping insertion in model container [2021-12-06 19:25:02,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:25:02" (3/3) ... [2021-12-06 19:25:02,421 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-06 19:25:02,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:25:02,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:25:02,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:25:02,472 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 [2021-12-06 19:25:02,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:25:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2021-12-06 19:25:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 19:25:02,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:02,528 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:02,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:25:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2021-12-06 19:25:02,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:02,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076039633] [2021-12-06 19:25:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:02,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:25:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:25:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:25:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:25:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:25:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:25:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:25:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:25:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:25:03,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:03,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076039633] [2021-12-06 19:25:03,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076039633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:03,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:03,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:25:03,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14422103] [2021-12-06 19:25:03,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:03,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:25:03,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:25:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:25:03,168 INFO L87 Difference]: Start difference. First operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-06 19:25:06,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:25:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:10,474 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2021-12-06 19:25:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:25:10,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2021-12-06 19:25:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:10,517 INFO L225 Difference]: With dead ends: 6691 [2021-12-06 19:25:10,517 INFO L226 Difference]: Without dead ends: 4554 [2021-12-06 19:25:10,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:25:10,539 INFO L933 BasicCegarLoop]: 3161 mSDtfsCounter, 4027 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 1412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 7068 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:10,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4350 Valid, 7068 Invalid, 3185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1412 Valid, 1772 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-12-06 19:25:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2021-12-06 19:25:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2021-12-06 19:25:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2945 states have (on average 1.33276740237691) internal successors, (3925), 2988 states have internal predecessors, (3925), 866 states have call successors, (866), 237 states have call predecessors, (866), 236 states have return successors, (859), 837 states have call predecessors, (859), 859 states have call successors, (859) [2021-12-06 19:25:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2021-12-06 19:25:10,884 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2021-12-06 19:25:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:10,885 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2021-12-06 19:25:10,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-06 19:25:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2021-12-06 19:25:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 19:25:10,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:10,898 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:10,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:25:10,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:25:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2021-12-06 19:25:10,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:10,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422663668] [2021-12-06 19:25:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:10,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:25:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:25:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:25:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:25:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:25:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:25:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:25:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:25:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:25:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 19:25:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:25:11,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:11,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422663668] [2021-12-06 19:25:11,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422663668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:11,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:11,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:25:11,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281149043] [2021-12-06 19:25:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:11,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:25:11,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:25:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:25:11,216 INFO L87 Difference]: Start difference. First operand 4048 states and 5650 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 19:25:14,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:25:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:18,332 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2021-12-06 19:25:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:25:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2021-12-06 19:25:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:18,410 INFO L225 Difference]: With dead ends: 12746 [2021-12-06 19:25:18,410 INFO L226 Difference]: Without dead ends: 8719 [2021-12-06 19:25:18,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:25:18,429 INFO L933 BasicCegarLoop]: 3102 mSDtfsCounter, 3824 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 1358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4158 SdHoareTripleChecker+Valid, 6886 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:18,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4158 Valid, 6886 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1358 Valid, 1857 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-06 19:25:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2021-12-06 19:25:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2021-12-06 19:25:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7670 states, 5584 states have (on average 1.3273638968481376) internal successors, (7412), 5665 states have internal predecessors, (7412), 1627 states have call successors, (1627), 459 states have call predecessors, (1627), 458 states have return successors, (1620), 1575 states have call predecessors, (1620), 1620 states have call successors, (1620) [2021-12-06 19:25:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2021-12-06 19:25:18,701 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2021-12-06 19:25:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:18,701 INFO L470 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2021-12-06 19:25:18,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 19:25:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2021-12-06 19:25:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 19:25:18,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:18,708 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:18,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:25:18,708 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:25:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2021-12-06 19:25:18,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:18,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973229554] [2021-12-06 19:25:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:18,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:25:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:25:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:25:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:25:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:25:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:25:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:25:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:25:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:25:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:19,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:25:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:25:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-06 19:25:19,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973229554] [2021-12-06 19:25:19,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973229554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:19,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:19,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:25:19,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128411600] [2021-12-06 19:25:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:19,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:25:19,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:25:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:25:19,030 INFO L87 Difference]: Start difference. First operand 7670 states and 10659 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:25:22,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:25:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:29,130 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2021-12-06 19:25:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:25:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2021-12-06 19:25:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:29,249 INFO L225 Difference]: With dead ends: 29996 [2021-12-06 19:25:29,249 INFO L226 Difference]: Without dead ends: 22347 [2021-12-06 19:25:29,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:25:29,282 INFO L933 BasicCegarLoop]: 3173 mSDtfsCounter, 7738 mSDsluCounter, 4873 mSDsCounter, 0 mSdLazyCounter, 4064 mSolverCounterSat, 4136 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8188 SdHoareTripleChecker+Valid, 8046 SdHoareTripleChecker+Invalid, 8201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4136 IncrementalHoareTripleChecker+Valid, 4064 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:29,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8188 Valid, 8046 Invalid, 8201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4136 Valid, 4064 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-12-06 19:25:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2021-12-06 19:25:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2021-12-06 19:25:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 11050 states have (on average 1.3270588235294118) internal successors, (14664), 11207 states have internal predecessors, (14664), 3207 states have call successors, (3207), 913 states have call predecessors, (3207), 912 states have return successors, (3200), 3109 states have call predecessors, (3200), 3200 states have call successors, (3200) [2021-12-06 19:25:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2021-12-06 19:25:29,896 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2021-12-06 19:25:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:29,896 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2021-12-06 19:25:29,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:25:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2021-12-06 19:25:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:25:29,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:29,901 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:29,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:25:29,901 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:25:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2021-12-06 19:25:29,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:29,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784153837] [2021-12-06 19:25:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:29,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:25:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:25:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:25:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:25:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:25:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:25:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:25:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:25:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:25:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:25:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:25:30,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:30,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784153837] [2021-12-06 19:25:30,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784153837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:30,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:30,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:25:30,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066641510] [2021-12-06 19:25:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:30,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:25:30,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:30,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:25:30,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:25:30,152 INFO L87 Difference]: Start difference. First operand 15170 states and 21071 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 19:25:32,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:25:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:40,734 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2021-12-06 19:25:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:25:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2021-12-06 19:25:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:40,914 INFO L225 Difference]: With dead ends: 58956 [2021-12-06 19:25:40,914 INFO L226 Difference]: Without dead ends: 43807 [2021-12-06 19:25:40,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:25:40,962 INFO L933 BasicCegarLoop]: 3080 mSDtfsCounter, 7608 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 4108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8048 SdHoareTripleChecker+Valid, 7995 SdHoareTripleChecker+Invalid, 8215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4108 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:40,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8048 Valid, 7995 Invalid, 8215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4108 Valid, 4106 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-12-06 19:25:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2021-12-06 19:25:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2021-12-06 19:25:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38538 states, 28142 states have (on average 1.3164664913652193) internal successors, (37048), 28354 states have internal predecessors, (37048), 7991 states have call successors, (7991), 1797 states have call predecessors, (7991), 2404 states have return successors, (10352), 8534 states have call predecessors, (10352), 7984 states have call successors, (10352) [2021-12-06 19:25:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2021-12-06 19:25:42,252 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2021-12-06 19:25:42,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:42,253 INFO L470 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2021-12-06 19:25:42,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 19:25:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2021-12-06 19:25:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 19:25:42,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:42,255 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:42,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:25:42,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:25:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2021-12-06 19:25:42,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670287011] [2021-12-06 19:25:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:42,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:25:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:25:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:25:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:25:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:25:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:25:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:25:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:25:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:25:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:25:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:25:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:25:42,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:42,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670287011] [2021-12-06 19:25:42,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670287011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:42,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:42,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:25:42,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275882052] [2021-12-06 19:25:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:42,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:25:42,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:25:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:25:42,522 INFO L87 Difference]: Start difference. First operand 38538 states and 55391 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:25:49,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:49,599 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2021-12-06 19:25:49,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:25:49,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-12-06 19:25:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:50,065 INFO L225 Difference]: With dead ends: 129915 [2021-12-06 19:25:50,065 INFO L226 Difference]: Without dead ends: 91398 [2021-12-06 19:25:50,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:25:50,240 INFO L933 BasicCegarLoop]: 3299 mSDtfsCounter, 5910 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 2840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6222 SdHoareTripleChecker+Valid, 7551 SdHoareTripleChecker+Invalid, 4741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2840 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:50,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6222 Valid, 7551 Invalid, 4741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2840 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-06 19:25:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2021-12-06 19:25:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2021-12-06 19:25:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83018 states, 60770 states have (on average 1.3114530195820306) internal successors, (79697), 61116 states have internal predecessors, (79697), 16759 states have call successors, (16759), 3593 states have call predecessors, (16759), 5488 states have return successors, (29268), 18636 states have call predecessors, (29268), 16752 states have call successors, (29268) [2021-12-06 19:25:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2021-12-06 19:25:53,491 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2021-12-06 19:25:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:53,491 INFO L470 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2021-12-06 19:25:53,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:25:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2021-12-06 19:25:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:25:53,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:53,494 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:25:53,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:25:53,494 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:25:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2021-12-06 19:25:53,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:53,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943375205] [2021-12-06 19:25:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:53,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:25:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:25:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:25:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:25:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:25:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:25:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:25:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:25:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:25:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:25:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:25:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:25:53,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943375205] [2021-12-06 19:25:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943375205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:53,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:53,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:25:53,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014428605] [2021-12-06 19:25:53,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:53,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:25:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:25:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:25:53,752 INFO L87 Difference]: Start difference. First operand 83018 states and 125724 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:26:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:04,654 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2021-12-06 19:26:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:26:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2021-12-06 19:26:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:05,623 INFO L225 Difference]: With dead ends: 265587 [2021-12-06 19:26:05,624 INFO L226 Difference]: Without dead ends: 182590 [2021-12-06 19:26:06,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:26:06,390 INFO L933 BasicCegarLoop]: 3467 mSDtfsCounter, 5664 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 2734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 7823 SdHoareTripleChecker+Invalid, 4665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2734 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:06,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5980 Valid, 7823 Invalid, 4665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2734 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 19:26:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2021-12-06 19:26:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2021-12-06 19:26:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167915 states, 122891 states have (on average 1.3083871072739257) internal successors, (160789), 123505 states have internal predecessors, (160789), 33751 states have call successors, (33751), 7185 states have call predecessors, (33751), 11272 states have return successors, (74860), 37880 states have call predecessors, (74860), 33744 states have call successors, (74860) [2021-12-06 19:26:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2021-12-06 19:26:14,211 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2021-12-06 19:26:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:14,211 INFO L470 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2021-12-06 19:26:14,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:26:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2021-12-06 19:26:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:26:14,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:14,214 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:14,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:26:14,214 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:26:14,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:14,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2021-12-06 19:26:14,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:14,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108196499] [2021-12-06 19:26:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:14,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:26:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:26:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:26:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:26:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:26:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:26:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:26:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:26:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:26:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:26:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:26:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:26:14,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:14,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108196499] [2021-12-06 19:26:14,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108196499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:26:14,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:26:14,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:26:14,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009021110] [2021-12-06 19:26:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:26:14,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:26:14,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:26:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:26:14,637 INFO L87 Difference]: Start difference. First operand 167915 states and 269400 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:26:17,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:26:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:28,799 INFO L93 Difference]: Finished difference Result 182588 states and 299012 transitions. [2021-12-06 19:26:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:26:28,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2021-12-06 19:26:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:29,670 INFO L225 Difference]: With dead ends: 182588 [2021-12-06 19:26:29,671 INFO L226 Difference]: Without dead ends: 182585 [2021-12-06 19:26:29,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:26:29,771 INFO L933 BasicCegarLoop]: 3478 mSDtfsCounter, 4429 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 1583 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 9285 SdHoareTripleChecker+Invalid, 4514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1583 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:29,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 9285 Invalid, 4514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1583 Valid, 2930 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-12-06 19:26:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182585 states. [2021-12-06 19:26:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182585 to 167916. [2021-12-06 19:26:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167916 states, 122892 states have (on average 1.308384597858282) internal successors, (160790), 123506 states have internal predecessors, (160790), 33751 states have call successors, (33751), 7185 states have call predecessors, (33751), 11272 states have return successors, (74860), 37880 states have call predecessors, (74860), 33744 states have call successors, (74860) [2021-12-06 19:26:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167916 states to 167916 states and 269401 transitions. [2021-12-06 19:26:37,091 INFO L78 Accepts]: Start accepts. Automaton has 167916 states and 269401 transitions. Word has length 94 [2021-12-06 19:26:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:37,091 INFO L470 AbstractCegarLoop]: Abstraction has 167916 states and 269401 transitions. [2021-12-06 19:26:37,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:26:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 167916 states and 269401 transitions. [2021-12-06 19:26:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 19:26:37,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:37,094 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:26:37,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:26:37,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:26:37,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1575598713, now seen corresponding path program 1 times [2021-12-06 19:26:37,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:37,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544774312] [2021-12-06 19:26:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:37,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:26:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:26:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:26:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:26:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:26:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:26:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:26:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:26:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:26:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:26:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:26:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:26:37,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:37,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544774312] [2021-12-06 19:26:37,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544774312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:26:37,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:26:37,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:26:37,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268227213] [2021-12-06 19:26:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:26:37,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:26:37,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:26:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:26:37,512 INFO L87 Difference]: Start difference. First operand 167916 states and 269401 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:26:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:51,990 INFO L93 Difference]: Finished difference Result 421575 states and 694060 transitions. [2021-12-06 19:26:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:26:51,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2021-12-06 19:26:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:53,570 INFO L225 Difference]: With dead ends: 421575 [2021-12-06 19:26:53,570 INFO L226 Difference]: Without dead ends: 253680 [2021-12-06 19:26:54,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:26:54,708 INFO L933 BasicCegarLoop]: 3998 mSDtfsCounter, 5179 mSDsluCounter, 4856 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 2431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5489 SdHoareTripleChecker+Valid, 8854 SdHoareTripleChecker+Invalid, 4405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2431 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:54,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5489 Valid, 8854 Invalid, 4405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2431 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-06 19:26:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253680 states. [2021-12-06 19:27:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253680 to 230480. [2021-12-06 19:27:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230480 states, 168523 states have (on average 1.3114352343597016) internal successors, (221007), 169813 states have internal predecessors, (221007), 46584 states have call successors, (46584), 10710 states have call predecessors, (46584), 15372 states have return successors, (100661), 50868 states have call predecessors, (100661), 46573 states have call successors, (100661) [2021-12-06 19:27:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230480 states to 230480 states and 368252 transitions. [2021-12-06 19:27:05,448 INFO L78 Accepts]: Start accepts. Automaton has 230480 states and 368252 transitions. Word has length 95 [2021-12-06 19:27:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:05,448 INFO L470 AbstractCegarLoop]: Abstraction has 230480 states and 368252 transitions. [2021-12-06 19:27:05,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:27:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 230480 states and 368252 transitions. [2021-12-06 19:27:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 19:27:05,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:05,451 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:05,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:27:05,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:27:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1597481041, now seen corresponding path program 1 times [2021-12-06 19:27:05,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851132167] [2021-12-06 19:27:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:05,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:27:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:27:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:27:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:27:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:27:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:27:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:27:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:27:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:27:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:27:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:27:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:27:05,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851132167] [2021-12-06 19:27:05,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851132167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:27:05,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:27:05,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:27:05,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738853010] [2021-12-06 19:27:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:27:05,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:27:05,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:27:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:27:05,642 INFO L87 Difference]: Start difference. First operand 230480 states and 368252 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:27:08,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:27:12,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:27:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:27:30,925 INFO L93 Difference]: Finished difference Result 502248 states and 819435 transitions. [2021-12-06 19:27:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:27:30,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2021-12-06 19:27:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:27:33,826 INFO L225 Difference]: With dead ends: 502248 [2021-12-06 19:27:33,826 INFO L226 Difference]: Without dead ends: 502016 [2021-12-06 19:27:34,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:27:34,196 INFO L933 BasicCegarLoop]: 3113 mSDtfsCounter, 4451 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 1598 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:27:34,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 8574 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1598 Valid, 2773 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2021-12-06 19:27:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502016 states. [2021-12-06 19:27:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502016 to 460679. [2021-12-06 19:27:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460679 states, 336858 states have (on average 1.3115556109696074) internal successors, (441808), 339432 states have internal predecessors, (441808), 93112 states have call successors, (93112), 21382 states have call predecessors, (93112), 30708 states have return successors, (201277), 101688 states have call predecessors, (201277), 93101 states have call successors, (201277) [2021-12-06 19:27:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460679 states to 460679 states and 736197 transitions. [2021-12-06 19:27:56,993 INFO L78 Accepts]: Start accepts. Automaton has 460679 states and 736197 transitions. Word has length 96 [2021-12-06 19:27:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:27:56,993 INFO L470 AbstractCegarLoop]: Abstraction has 460679 states and 736197 transitions. [2021-12-06 19:27:56,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 19:27:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 460679 states and 736197 transitions. [2021-12-06 19:27:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 19:27:56,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:27:56,998 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:27:56,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:27:56,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:27:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1606001788, now seen corresponding path program 1 times [2021-12-06 19:27:56,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:56,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115429478] [2021-12-06 19:27:56,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:56,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:27:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:27:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:27:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:27:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:27:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:27:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:27:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:27:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:27:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:27:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 19:27:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:27:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:27:57,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:57,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115429478] [2021-12-06 19:27:57,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115429478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:27:57,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:27:57,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:27:57,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389230691] [2021-12-06 19:27:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:27:57,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:27:57,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:27:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:27:57,197 INFO L87 Difference]: Start difference. First operand 460679 states and 736197 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 19:27:59,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:28:02,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:28:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:28:47,033 INFO L93 Difference]: Finished difference Result 1398345 states and 2266555 transitions. [2021-12-06 19:28:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:28:47,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-12-06 19:28:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:28:54,104 INFO L225 Difference]: With dead ends: 1398345 [2021-12-06 19:28:54,104 INFO L226 Difference]: Without dead ends: 937687 [2021-12-06 19:28:57,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:28:57,758 INFO L933 BasicCegarLoop]: 4369 mSDtfsCounter, 6290 mSDsluCounter, 5790 mSDsCounter, 0 mSdLazyCounter, 4300 mSolverCounterSat, 3525 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6761 SdHoareTripleChecker+Valid, 10159 SdHoareTripleChecker+Invalid, 7827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3525 IncrementalHoareTripleChecker+Valid, 4300 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:28:57,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6761 Valid, 10159 Invalid, 7827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3525 Valid, 4300 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2021-12-06 19:28:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937687 states. [2021-12-06 19:29:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937687 to 849679. [2021-12-06 19:29:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849679 states, 619830 states have (on average 1.30870077279254) internal successors, (811172), 624964 states have internal predecessors, (811172), 171436 states have call successors, (171436), 40550 states have call predecessors, (171436), 58412 states have return successors, (368845), 187476 states have call predecessors, (368845), 171425 states have call successors, (368845) [2021-12-06 19:29:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849679 states to 849679 states and 1351453 transitions. [2021-12-06 19:29:40,964 INFO L78 Accepts]: Start accepts. Automaton has 849679 states and 1351453 transitions. Word has length 113 [2021-12-06 19:29:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:29:40,965 INFO L470 AbstractCegarLoop]: Abstraction has 849679 states and 1351453 transitions. [2021-12-06 19:29:40,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 19:29:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand 849679 states and 1351453 transitions. [2021-12-06 19:29:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 19:29:40,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:29:40,969 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:29:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:29:40,969 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:29:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash -472848701, now seen corresponding path program 1 times [2021-12-06 19:29:40,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:40,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879950516] [2021-12-06 19:29:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:40,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:29:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:29:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:29:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:29:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:29:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:29:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:29:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:29:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:29:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:29:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:29:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 19:29:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 19:29:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:29:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:29:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-06 19:29:41,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:41,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879950516] [2021-12-06 19:29:41,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879950516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:29:41,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:29:41,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:29:41,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138022599] [2021-12-06 19:29:41,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:29:41,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:29:41,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:29:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:29:41,792 INFO L87 Difference]: Start difference. First operand 849679 states and 1351453 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 19:29:44,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:29:46,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []