./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/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_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:01:05,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:01:05,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:01:05,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:01:05,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:01:05,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:01:05,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:01:05,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:01:05,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:01:05,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:01:05,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:01:05,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:01:05,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:01:05,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:01:05,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:01:05,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:01:05,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:01:05,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:01:05,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:01:05,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:01:05,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:01:05,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:01:05,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:01:05,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:01:05,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:01:05,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:01:05,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:01:05,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:01:05,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:01:05,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:01:05,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:01:05,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:01:05,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:01:05,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:01:05,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:01:05,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:01:05,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:01:05,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:01:05,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:01:05,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:01:05,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:01:05,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:01:05,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:01:05,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:01:05,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:01:05,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:01:05,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:01:05,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:01:05,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:01:05,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:01:05,265 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:01:05,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:01:05,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:01:05,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:01:05,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:01:05,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:01:05,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:01:05,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:01:05,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:01:05,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:01:05,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:01:05,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:01:05,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:01:05,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:01:05,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:01:05,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:01:05,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:01:05,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:01:05,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:01:05,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:01:05,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:01:05,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:01:05,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:01:05,271 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_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-11-13 18:01:05,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:01:05,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:01:05,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:01:05,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:01:05,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:01:05,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/../../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 [2021-11-13 18:01:05,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/data/18f52e3ea/bef21f1e45824a9aa629b2b22e73752f/FLAGdde1989cd [2021-11-13 18:01:06,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:01:06,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/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 [2021-11-13 18:01:06,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/data/18f52e3ea/bef21f1e45824a9aa629b2b22e73752f/FLAGdde1989cd [2021-11-13 18:01:07,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/data/18f52e3ea/bef21f1e45824a9aa629b2b22e73752f [2021-11-13 18:01:07,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:01:07,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:01:07,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:01:07,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:01:07,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:01:07,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:01:07" (1/1) ... [2021-11-13 18:01:07,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d38ec88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:07, skipping insertion in model container [2021-11-13 18:01:07,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:01:07" (1/1) ... [2021-11-13 18:01:07,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:01:07,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:01:08,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/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] [2021-11-13 18:01:09,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:01:09,574 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:01:09,702 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/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] [2021-11-13 18:01:10,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:01:10,271 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:01:10,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10 WrapperNode [2021-11-13 18:01:10,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:01:10,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:01:10,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:01:10,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:01:10,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:01:10,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:01:10,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:01:10,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:01:10,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:10,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:11,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:11,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:01:11,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:01:11,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:01:11,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:01:11,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (1/1) ... [2021-11-13 18:01:11,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:01:11,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:11,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:01:11,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc22272-24dd-4435-897b-46528aaa1adb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:01:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-11-13 18:01:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-11-13 18:01:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-11-13 18:01:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-11-13 18:01:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-11-13 18:01:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-11-13 18:01:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-13 18:01:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-13 18:01:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-13 18:01:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-13 18:01:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2021-11-13 18:01:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2021-11-13 18:01:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-11-13 18:01:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-11-13 18:01:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:01:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:01:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-13 18:01:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-13 18:01:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-13 18:01:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-13 18:01:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-13 18:01:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-13 18:01:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2021-11-13 18:01:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2021-11-13 18:01:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-13 18:01:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-13 18:01:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-13 18:01:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-13 18:01:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 18:01:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 18:01:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 18:01:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 18:01:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-13 18:01:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-13 18:01:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:01:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:01:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-13 18:01:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-13 18:01:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-13 18:01:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-13 18:01:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-11-13 18:01:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-11-13 18:01:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2021-11-13 18:01:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2021-11-13 18:01:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-13 18:01:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-13 18:01:11,129 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-11-13 18:01:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-11-13 18:01:11,129 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:01:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:01:11,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:01:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:01:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-13 18:01:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-13 18:01:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-13 18:01:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-13 18:01:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-11-13 18:01:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-11-13 18:01:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-13 18:01:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-13 18:01:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-11-13 18:01:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-11-13 18:01:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 18:01:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 18:01:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:01:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:01:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-11-13 18:01:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-11-13 18:01:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-11-13 18:01:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-11-13 18:01:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-13 18:01:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-13 18:01:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-13 18:01:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-13 18:01:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2021-11-13 18:01:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2021-11-13 18:01:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2021-11-13 18:01:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2021-11-13 18:01:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-11-13 18:01:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-11-13 18:01:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-13 18:01:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-13 18:01:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:01:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:01:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:01:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:01:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:01:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-13 18:01:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-13 18:01:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-11-13 18:01:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-11-13 18:01:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-11-13 18:01:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-11-13 18:01:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-13 18:01:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-13 18:01:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-13 18:01:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-13 18:01:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:01:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-13 18:01:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-13 18:01:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-13 18:01:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-13 18:01:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-13 18:01:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-13 18:01:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-13 18:01:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-13 18:01:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-13 18:01:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:01:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:01:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-11-13 18:01:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-11-13 18:01:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-11-13 18:01:11,143 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-11-13 18:01:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:01:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:01:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2021-11-13 18:01:11,143 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2021-11-13 18:01:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-13 18:01:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-13 18:01:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-11-13 18:01:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-11-13 18:01:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:01:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:01:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-11-13 18:01:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-11-13 18:01:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-13 18:01:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-13 18:01:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:01:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:01:11,155 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 18:01:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 18:01:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 18:01:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 18:01:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-13 18:01:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-13 18:01:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-11-13 18:01:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-11-13 18:01:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-11-13 18:01:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-11-13 18:01:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:01:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:01:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-13 18:01:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-13 18:01:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-11-13 18:01:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-11-13 18:01:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:01:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:01:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-13 18:01:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-13 18:01:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 18:01:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 18:01:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-13 18:01:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-13 18:01:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-11-13 18:01:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-11-13 18:01:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-13 18:01:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-13 18:01:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-13 18:01:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-13 18:01:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-11-13 18:01:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-11-13 18:01:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:01:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-11-13 18:01:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-11-13 18:01:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-13 18:01:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-13 18:01:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-13 18:01:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-13 18:01:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-13 18:01:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-13 18:01:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-11-13 18:01:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-11-13 18:01:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-11-13 18:01:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-11-13 18:01:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 18:01:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 18:01:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-13 18:01:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-13 18:01:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-13 18:01:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-13 18:01:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-13 18:01:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-13 18:01:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:01:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:01:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-11-13 18:01:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-11-13 18:01:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-11-13 18:01:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-11-13 18:01:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-13 18:01:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-13 18:01:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:01:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2021-11-13 18:01:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2021-11-13 18:01:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-13 18:01:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-13 18:01:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-13 18:01:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-13 18:01:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:01:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:01:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-13 18:01:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-13 18:01:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-11-13 18:01:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-11-13 18:01:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2021-11-13 18:01:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2021-11-13 18:01:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:01:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-11-13 18:01:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-11-13 18:01:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 18:01:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 18:01:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:01:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:01:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2021-11-13 18:01:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2021-11-13 18:01:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-11-13 18:01:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-11-13 18:01:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:01:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:01:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-13 18:01:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-13 18:01:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-13 18:01:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-13 18:01:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 18:01:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 18:01:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-11-13 18:01:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-11-13 18:01:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2021-11-13 18:01:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2021-11-13 18:01:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-13 18:01:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-13 18:01:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-11-13 18:01:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-11-13 18:01:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-13 18:01:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-13 18:01:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-13 18:01:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-13 18:01:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:01:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:01:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-13 18:01:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-13 18:01:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:01:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:01:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-11-13 18:01:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-11-13 18:01:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 18:01:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 18:01:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-13 18:01:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-13 18:01:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:01:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:01:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:01:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-11-13 18:01:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-11-13 18:01:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-11-13 18:01:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-11-13 18:01:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:01:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:01:12,896 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:01:13,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2021-11-13 18:01:43,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:01:43,287 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:01:43,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:43 BoogieIcfgContainer [2021-11-13 18:01:43,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:01:43,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:01:43,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:01:43,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:01:43,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:01:07" (1/3) ... [2021-11-13 18:01:43,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12645774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:01:43, skipping insertion in model container [2021-11-13 18:01:43,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:10" (2/3) ... [2021-11-13 18:01:43,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12645774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:01:43, skipping insertion in model container [2021-11-13 18:01:43,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:43" (3/3) ... [2021-11-13 18:01:43,314 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-13 18:01:43,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:01:43,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:01:43,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:01:43,399 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:01:43,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:01:43,469 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) [2021-11-13 18:01:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:01:43,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:43,489 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] [2021-11-13 18:01:43,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:01:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2021-11-13 18:01:43,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:43,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311446109] [2021-11-13 18:01:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:43,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:01:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:01:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:01:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:01:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:01:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:01:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:01:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:01:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-13 18:01:44,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:44,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311446109] [2021-11-13 18:01:44,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311446109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:44,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:44,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:44,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122025247] [2021-11-13 18:01:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:44,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:44,853 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) [2021-11-13 18:01:46,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:49,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:52,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:59,166 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2021-11-13 18:01:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:59,172 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 [2021-11-13 18:01:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:59,242 INFO L225 Difference]: With dead ends: 6691 [2021-11-13 18:01:59,242 INFO L226 Difference]: Without dead ends: 4554 [2021-11-13 18:01:59,268 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 [2021-11-13 18:01:59,272 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 4027 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 1412 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12626.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 7073 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.32ms SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13749.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:59,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4346 Valid, 7073 Invalid, 3185 Unknown, 0 Unchecked, 80.32ms Time], IncrementalHoareTripleChecker [1412 Valid, 1770 Invalid, 3 Unknown, 0 Unchecked, 13749.98ms Time] [2021-11-13 18:01:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2021-11-13 18:01:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2021-11-13 18:01:59,560 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) [2021-11-13 18:01:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2021-11-13 18:01:59,609 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2021-11-13 18:01:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:59,611 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2021-11-13 18:01:59,611 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) [2021-11-13 18:01:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2021-11-13 18:01:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 18:01:59,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:59,635 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] [2021-11-13 18:01:59,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:01:59,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:01:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2021-11-13 18:01:59,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:59,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999035263] [2021-11-13 18:01:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:59,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:02:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:02:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:02:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:02:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:02:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:02:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:02:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:02:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:02:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 18:02:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-13 18:02:00,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:02:00,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999035263] [2021-11-13 18:02:00,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999035263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:02:00,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:02:00,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:02:00,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770306428] [2021-11-13 18:02:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:02:00,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:02:00,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:02:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:02:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:02:00,365 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) [2021-11-13 18:02:02,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:06,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:13,048 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2021-11-13 18:02:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:02:13,049 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 [2021-11-13 18:02:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:13,134 INFO L225 Difference]: With dead ends: 12746 [2021-11-13 18:02:13,135 INFO L226 Difference]: Without dead ends: 8719 [2021-11-13 18:02:13,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:02:13,161 INFO L933 BasicCegarLoop]: 3103 mSDtfsCounter, 3824 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 1358 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11144.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4156 SdHoareTripleChecker+Valid, 6887 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.32ms SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12114.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:13,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4156 Valid, 6887 Invalid, 3216 Unknown, 0 Unchecked, 59.32ms Time], IncrementalHoareTripleChecker [1358 Valid, 1856 Invalid, 2 Unknown, 0 Unchecked, 12114.71ms Time] [2021-11-13 18:02:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2021-11-13 18:02:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2021-11-13 18:02:13,548 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) [2021-11-13 18:02:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2021-11-13 18:02:13,584 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2021-11-13 18:02:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:13,586 INFO L470 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2021-11-13 18:02:13,586 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) [2021-11-13 18:02:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2021-11-13 18:02:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 18:02:13,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:13,593 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] [2021-11-13 18:02:13,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:02:13,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:02:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2021-11-13 18:02:13,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:13,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179515533] [2021-11-13 18:02:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:13,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:02:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:02:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:02:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:02:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:02:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:02:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:02:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:02:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:02:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:02:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:02:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-13 18:02:14,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:02:14,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179515533] [2021-11-13 18:02:14,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179515533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:02:14,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:02:14,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:02:14,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910345816] [2021-11-13 18:02:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:02:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:02:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:02:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:02:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:02:14,337 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) [2021-11-13 18:02:16,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:18,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:22,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:34,798 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2021-11-13 18:02:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:02:34,799 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 [2021-11-13 18:02:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:34,974 INFO L225 Difference]: With dead ends: 29996 [2021-11-13 18:02:34,974 INFO L226 Difference]: Without dead ends: 22347 [2021-11-13 18:02:35,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:02:35,028 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 7741 mSDsluCounter, 4884 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 4143 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17959.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8191 SdHoareTripleChecker+Valid, 8064 SdHoareTripleChecker+Invalid, 8194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.73ms SdHoareTripleChecker+Time, 4143 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19623.96ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:35,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8191 Valid, 8064 Invalid, 8194 Unknown, 0 Unchecked, 78.73ms Time], IncrementalHoareTripleChecker [4143 Valid, 4048 Invalid, 3 Unknown, 0 Unchecked, 19623.96ms Time] [2021-11-13 18:02:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2021-11-13 18:02:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2021-11-13 18:02:35,951 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) [2021-11-13 18:02:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2021-11-13 18:02:36,024 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2021-11-13 18:02:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:36,025 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2021-11-13 18:02:36,026 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) [2021-11-13 18:02:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2021-11-13 18:02:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:02:36,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:36,032 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] [2021-11-13 18:02:36,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:02:36,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:02:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:36,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2021-11-13 18:02:36,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:36,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062548596] [2021-11-13 18:02:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:36,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:02:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:02:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:02:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:02:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:02:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:02:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:02:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:02:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:02:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:02:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,560 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-13 18:02:36,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:02:36,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062548596] [2021-11-13 18:02:36,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062548596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:02:36,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:02:36,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:02:36,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481201270] [2021-11-13 18:02:36,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:02:36,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:02:36,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:02:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:02:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:02:36,564 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) [2021-11-13 18:02:38,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:40,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:43,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:55,741 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2021-11-13 18:02:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:02:55,742 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 [2021-11-13 18:02:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:56,015 INFO L225 Difference]: With dead ends: 58956 [2021-11-13 18:02:56,015 INFO L226 Difference]: Without dead ends: 43807 [2021-11-13 18:02:56,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:02:56,104 INFO L933 BasicCegarLoop]: 3078 mSDtfsCounter, 7619 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 4138 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16364.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8051 SdHoareTripleChecker+Valid, 8009 SdHoareTripleChecker+Invalid, 8232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.42ms SdHoareTripleChecker+Time, 4138 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17878.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:56,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8051 Valid, 8009 Invalid, 8232 Unknown, 0 Unchecked, 68.42ms Time], IncrementalHoareTripleChecker [4138 Valid, 4091 Invalid, 3 Unknown, 0 Unchecked, 17878.23ms Time] [2021-11-13 18:02:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2021-11-13 18:02:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2021-11-13 18:02:58,210 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) [2021-11-13 18:02:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2021-11-13 18:02:58,678 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2021-11-13 18:02:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:58,679 INFO L470 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2021-11-13 18:02:58,679 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) [2021-11-13 18:02:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2021-11-13 18:02:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 18:02:58,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:58,688 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] [2021-11-13 18:02:58,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:02:58,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:02:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2021-11-13 18:02:58,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:58,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482404904] [2021-11-13 18:02:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:58,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:02:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:02:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:02:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:02:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:02:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:03:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:03:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:03:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:03:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:03:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:03:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-13 18:03:00,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:00,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482404904] [2021-11-13 18:03:00,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482404904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:00,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:00,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:03:00,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780074872] [2021-11-13 18:03:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:00,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:03:00,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:03:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:00,154 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) [2021-11-13 18:03:02,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:12,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:12,077 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2021-11-13 18:03:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:03:12,078 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 [2021-11-13 18:03:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:12,994 INFO L225 Difference]: With dead ends: 129915 [2021-11-13 18:03:12,995 INFO L226 Difference]: Without dead ends: 91398 [2021-11-13 18:03:13,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:03:13,424 INFO L933 BasicCegarLoop]: 3301 mSDtfsCounter, 5912 mSDsluCounter, 4256 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 2840 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7819.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6219 SdHoareTripleChecker+Valid, 7557 SdHoareTripleChecker+Invalid, 4737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.41ms SdHoareTripleChecker+Time, 2840 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8683.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:13,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6219 Valid, 7557 Invalid, 4737 Unknown, 0 Unchecked, 43.41ms Time], IncrementalHoareTripleChecker [2840 Valid, 1896 Invalid, 1 Unknown, 0 Unchecked, 8683.01ms Time] [2021-11-13 18:03:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2021-11-13 18:03:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2021-11-13 18:03:18,200 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) [2021-11-13 18:03:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2021-11-13 18:03:19,348 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2021-11-13 18:03:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:19,349 INFO L470 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2021-11-13 18:03:19,349 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) [2021-11-13 18:03:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2021-11-13 18:03:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:03:19,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:19,353 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] [2021-11-13 18:03:19,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:03:19,353 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2021-11-13 18:03:19,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:19,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086898454] [2021-11-13 18:03:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:19,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:03:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:03:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:03:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:03:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:03:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:03:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:03:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:03:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:03:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:03:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:03:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-13 18:03:20,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:20,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086898454] [2021-11-13 18:03:20,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086898454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:20,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:20,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:03:20,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087459034] [2021-11-13 18:03:20,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:20,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:03:20,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:03:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:20,606 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) [2021-11-13 18:03:22,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:37,019 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2021-11-13 18:03:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:03:37,020 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 [2021-11-13 18:03:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:38,622 INFO L225 Difference]: With dead ends: 265587 [2021-11-13 18:03:38,623 INFO L226 Difference]: Without dead ends: 182590 [2021-11-13 18:03:39,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:03:39,586 INFO L933 BasicCegarLoop]: 3478 mSDtfsCounter, 5664 mSDsluCounter, 4365 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 2732 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7808.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.77ms SdHoareTripleChecker+Time, 2732 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8662.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:39,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5980 Valid, 7843 Invalid, 4666 Unknown, 0 Unchecked, 42.77ms Time], IncrementalHoareTripleChecker [2732 Valid, 1933 Invalid, 1 Unknown, 0 Unchecked, 8662.67ms Time] [2021-11-13 18:03:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2021-11-13 18:03:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2021-11-13 18:03:47,574 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) [2021-11-13 18:03:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2021-11-13 18:03:50,022 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2021-11-13 18:03:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:50,022 INFO L470 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2021-11-13 18:03:50,023 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) [2021-11-13 18:03:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2021-11-13 18:03:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 18:03:50,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:50,026 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] [2021-11-13 18:03:50,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:03:50,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2021-11-13 18:03:50,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:50,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381691573] [2021-11-13 18:03:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:50,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:03:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:03:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:03:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:03:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:03:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:03:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:03:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:03:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:03:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:03:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:51,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:03:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-13 18:03:51,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:51,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381691573] [2021-11-13 18:03:51,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381691573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:51,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:51,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:03:51,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672968354] [2021-11-13 18:03:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:51,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:03:51,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:03:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:51,038 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) [2021-11-13 18:03:53,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:55,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:57,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []