./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:49:26,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:49:26,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:49:26,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:49:26,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:49:26,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:49:26,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:49:26,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:49:26,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:49:26,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:49:26,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:49:26,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:49:26,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:49:26,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:49:26,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:49:26,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:49:26,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:49:26,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:49:26,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:49:26,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:49:26,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:49:26,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:49:26,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:49:26,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:49:26,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:49:26,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:49:26,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:49:26,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:49:26,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:49:26,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:49:26,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:49:26,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:49:26,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:49:26,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:49:26,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:49:26,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:49:26,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:49:26,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:49:26,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:49:26,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:49:26,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:49:26,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:49:26,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:49:26,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:49:26,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:49:26,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:49:26,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:49:26,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:49:26,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:49:26,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:49:26,309 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:49:26,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:49:26,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:49:26,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:49:26,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:49:26,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:49:26,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:49:26,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:49:26,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:49:26,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:49:26,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:49:26,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:49:26,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:49:26,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:49:26,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:49:26,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:49:26,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:49:26,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:49:26,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:49:26,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:49:26,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:49:26,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:49:26,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:49:26,313 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_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2021-11-20 06:49:26,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:49:26,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:49:26,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:49:26,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:49:26,571 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:49:26,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-11-20 06:49:26,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/data/8c9b42b4d/7c198691571e49b5999507c253bfa476/FLAGf18e0c081 [2021-11-20 06:49:27,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:49:27,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-11-20 06:49:27,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/data/8c9b42b4d/7c198691571e49b5999507c253bfa476/FLAGf18e0c081 [2021-11-20 06:49:28,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/data/8c9b42b4d/7c198691571e49b5999507c253bfa476 [2021-11-20 06:49:28,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:49:28,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:49:28,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:49:28,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:49:28,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:49:28,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:49:28" (1/1) ... [2021-11-20 06:49:28,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6165e860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:28, skipping insertion in model container [2021-11-20 06:49:28,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:49:28" (1/1) ... [2021-11-20 06:49:28,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:49:28,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:49:30,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2021-11-20 06:49:30,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:49:30,604 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:49:31,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2021-11-20 06:49:31,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:49:31,328 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:49:31,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31 WrapperNode [2021-11-20 06:49:31,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:49:31,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:49:31,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:49:31,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:49:31,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:31,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:31,746 INFO L137 Inliner]: procedures = 274, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6383 [2021-11-20 06:49:31,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:49:31,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:49:31,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:49:31,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:49:31,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:31,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:31,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:31,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:31,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:32,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:32,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:32,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:49:32,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:49:32,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:49:32,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:49:32,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (1/1) ... [2021-11-20 06:49:32,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:49:32,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:49:32,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:49:32,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:49:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2021-11-20 06:49:32,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2021-11-20 06:49:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2021-11-20 06:49:32,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2021-11-20 06:49:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2021-11-20 06:49:32,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2021-11-20 06:49:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 06:49:32,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 06:49:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2021-11-20 06:49:32,185 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2021-11-20 06:49:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 06:49:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 06:49:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-20 06:49:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-20 06:49:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-20 06:49:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-20 06:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2021-11-20 06:49:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2021-11-20 06:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:49:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-20 06:49:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-20 06:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2021-11-20 06:49:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2021-11-20 06:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2021-11-20 06:49:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2021-11-20 06:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 06:49:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 06:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:49:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2021-11-20 06:49:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2021-11-20 06:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:49:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-20 06:49:32,190 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-20 06:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2021-11-20 06:49:32,190 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2021-11-20 06:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2021-11-20 06:49:32,190 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2021-11-20 06:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2021-11-20 06:49:32,190 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2021-11-20 06:49:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2021-11-20 06:49:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2021-11-20 06:49:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-20 06:49:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-20 06:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 06:49:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 06:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2021-11-20 06:49:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2021-11-20 06:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-20 06:49:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-20 06:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 06:49:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 06:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2021-11-20 06:49:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2021-11-20 06:49:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 06:49:32,196 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 06:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:49:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2021-11-20 06:49:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2021-11-20 06:49:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2021-11-20 06:49:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2021-11-20 06:49:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 06:49:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 06:49:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 06:49:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 06:49:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2021-11-20 06:49:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2021-11-20 06:49:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 06:49:32,199 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 06:49:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2021-11-20 06:49:32,199 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2021-11-20 06:49:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 06:49:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 06:49:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2021-11-20 06:49:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2021-11-20 06:49:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2021-11-20 06:49:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2021-11-20 06:49:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2021-11-20 06:49:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2021-11-20 06:49:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2021-11-20 06:49:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2021-11-20 06:49:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 06:49:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 06:49:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2021-11-20 06:49:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2021-11-20 06:49:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-20 06:49:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-20 06:49:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:49:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2021-11-20 06:49:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2021-11-20 06:49:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2021-11-20 06:49:32,204 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2021-11-20 06:49:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2021-11-20 06:49:32,204 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2021-11-20 06:49:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2021-11-20 06:49:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2021-11-20 06:49:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2021-11-20 06:49:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2021-11-20 06:49:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 06:49:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 06:49:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:49:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:49:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2021-11-20 06:49:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2021-11-20 06:49:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 06:49:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 06:49:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:49:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 06:49:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 06:49:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 06:49:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 06:49:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:49:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-20 06:49:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 06:49:32,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 06:49:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-20 06:49:32,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-20 06:49:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:49:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2021-11-20 06:49:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2021-11-20 06:49:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2021-11-20 06:49:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2021-11-20 06:49:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 06:49:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 06:49:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:49:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2021-11-20 06:49:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2021-11-20 06:49:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2021-11-20 06:49:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2021-11-20 06:49:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-11-20 06:49:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-11-20 06:49:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2021-11-20 06:49:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2021-11-20 06:49:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2021-11-20 06:49:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2021-11-20 06:49:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2021-11-20 06:49:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2021-11-20 06:49:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-11-20 06:49:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-11-20 06:49:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2021-11-20 06:49:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2021-11-20 06:49:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2021-11-20 06:49:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2021-11-20 06:49:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 06:49:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 06:49:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2021-11-20 06:49:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2021-11-20 06:49:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2021-11-20 06:49:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2021-11-20 06:49:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:49:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2021-11-20 06:49:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2021-11-20 06:49:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:49:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:49:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2021-11-20 06:49:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2021-11-20 06:49:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2021-11-20 06:49:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2021-11-20 06:49:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2021-11-20 06:49:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2021-11-20 06:49:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 06:49:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 06:49:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2021-11-20 06:49:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2021-11-20 06:49:32,969 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:49:32,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:49:34,542 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 06:49:44,474 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:49:44,500 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:49:44,501 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:49:44,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:49:44 BoogieIcfgContainer [2021-11-20 06:49:44,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:49:44,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:49:44,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:49:44,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:49:44,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:49:28" (1/3) ... [2021-11-20 06:49:44,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26491fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:49:44, skipping insertion in model container [2021-11-20 06:49:44,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:49:31" (2/3) ... [2021-11-20 06:49:44,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26491fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:49:44, skipping insertion in model container [2021-11-20 06:49:44,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:49:44" (3/3) ... [2021-11-20 06:49:44,515 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-11-20 06:49:44,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:49:44,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:49:44,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:49:44,590 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:49:44,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:49:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) [2021-11-20 06:49:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 06:49:44,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:44,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:44,665 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:49:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2139334231, now seen corresponding path program 1 times [2021-11-20 06:49:44,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:44,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746349912] [2021-11-20 06:49:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:44,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 06:49:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:49:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:49:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 06:49:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 06:49:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 06:49:45,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:45,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746349912] [2021-11-20 06:49:45,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746349912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:45,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:45,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:49:45,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306013996] [2021-11-20 06:49:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:45,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:49:45,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:45,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:49:45,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:49:45,806 INFO L87 Difference]: Start difference. First operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:49:51,704 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 [] [2021-11-20 06:49:56,291 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 [] [2021-11-20 06:49:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:58,552 INFO L93 Difference]: Finished difference Result 4012 states and 5742 transitions. [2021-11-20 06:49:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:49:58,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-11-20 06:49:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:58,598 INFO L225 Difference]: With dead ends: 4012 [2021-11-20 06:49:58,598 INFO L226 Difference]: Without dead ends: 2530 [2021-11-20 06:49:58,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:49:58,623 INFO L933 BasicCegarLoop]: 2282 mSDtfsCounter, 1909 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 1984 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 5255 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1984 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:58,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 5255 Invalid, 3089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1984 Valid, 1103 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-20 06:49:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-20 06:49:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2466. [2021-11-20 06:49:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1727 states have (on average 1.3103647944412276) internal successors, (2263), 1748 states have internal predecessors, (2263), 601 states have call successors, (601), 138 states have call predecessors, (601), 137 states have return successors, (600), 599 states have call predecessors, (600), 600 states have call successors, (600) [2021-11-20 06:49:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2021-11-20 06:49:58,949 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2021-11-20 06:49:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:58,950 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2021-11-20 06:49:58,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:49:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2021-11-20 06:49:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-20 06:49:58,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:58,972 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:58,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:49:58,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:49:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:58,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1055536844, now seen corresponding path program 1 times [2021-11-20 06:49:58,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:58,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088600094] [2021-11-20 06:49:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:58,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:49:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:49:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:49:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:49:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 06:49:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:49:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:49:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:49:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:49:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:49:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:49:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:49:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:49:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-20 06:49:59,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:59,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088600094] [2021-11-20 06:49:59,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088600094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:59,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:59,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:49:59,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526686769] [2021-11-20 06:49:59,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:59,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:49:59,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:49:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:49:59,873 INFO L87 Difference]: Start difference. First operand 2466 states and 3464 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 06:50:04,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:50:08,644 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 [] [2021-11-20 06:50:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:50:11,842 INFO L93 Difference]: Finished difference Result 4526 states and 6404 transitions. [2021-11-20 06:50:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:50:11,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 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 152 [2021-11-20 06:50:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:50:11,883 INFO L225 Difference]: With dead ends: 4526 [2021-11-20 06:50:11,883 INFO L226 Difference]: Without dead ends: 4523 [2021-11-20 06:50:11,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:50:11,888 INFO L933 BasicCegarLoop]: 2384 mSDtfsCounter, 1908 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1897 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 5412 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:50:11,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 5412 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1897 Valid, 1082 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2021-11-20 06:50:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2021-11-20 06:50:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4379. [2021-11-20 06:50:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 3068 states have (on average 1.308670143415906) internal successors, (4015), 3118 states have internal predecessors, (4015), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1078), 1044 states have call predecessors, (1078), 1059 states have call successors, (1078) [2021-11-20 06:50:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6153 transitions. [2021-11-20 06:50:12,164 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6153 transitions. Word has length 152 [2021-11-20 06:50:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:50:12,167 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 6153 transitions. [2021-11-20 06:50:12,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 06:50:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6153 transitions. [2021-11-20 06:50:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-20 06:50:12,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:50:12,185 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:50:12,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:50:12,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:50:12,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:50:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1344442639, now seen corresponding path program 1 times [2021-11-20 06:50:12,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:50:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74831095] [2021-11-20 06:50:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:50:12,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:50:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:50:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:50:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 06:50:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:50:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:50:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:50:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:50:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:50:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 06:50:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-20 06:50:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-20 06:50:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-20 06:50:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-20 06:50:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:50:12,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:50:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74831095] [2021-11-20 06:50:12,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74831095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:50:12,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:50:12,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:50:12,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462618070] [2021-11-20 06:50:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:50:12,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:50:12,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:50:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:50:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:50:12,846 INFO L87 Difference]: Start difference. First operand 4379 states and 6153 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:50:19,222 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 [] [2021-11-20 06:50:21,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:50:23,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:50:33,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 06:50:35,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 06:50:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:50:36,933 INFO L93 Difference]: Finished difference Result 8925 states and 12587 transitions. [2021-11-20 06:50:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:50:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2021-11-20 06:50:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:50:36,975 INFO L225 Difference]: With dead ends: 8925 [2021-11-20 06:50:36,976 INFO L226 Difference]: Without dead ends: 4550 [2021-11-20 06:50:36,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:50:36,998 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 1253 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 3994 mSolverCounterSat, 1189 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 5188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 3994 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:50:36,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 3730 Invalid, 5188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 3994 Invalid, 5 Unknown, 0 Unchecked, 23.7s Time] [2021-11-20 06:50:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-11-20 06:50:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4441. [2021-11-20 06:50:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 3108 states have (on average 1.3072715572715572) internal successors, (4063), 3160 states have internal predecessors, (4063), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2021-11-20 06:50:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6244 transitions. [2021-11-20 06:50:37,343 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6244 transitions. Word has length 194 [2021-11-20 06:50:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:50:37,344 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6244 transitions. [2021-11-20 06:50:37,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:50:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6244 transitions. [2021-11-20 06:50:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-20 06:50:37,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:50:37,358 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:50:37,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:50:37,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:50:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:50:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 583830063, now seen corresponding path program 1 times [2021-11-20 06:50:37,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:50:37,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671974326] [2021-11-20 06:50:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:50:37,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:50:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:50:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:50:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 06:50:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:50:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:50:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:50:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:50:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:50:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:50:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 06:50:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-20 06:50:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-20 06:50:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-20 06:50:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-20 06:50:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-20 06:50:37,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:50:37,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671974326] [2021-11-20 06:50:37,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671974326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:50:37,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:50:37,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:50:37,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720281074] [2021-11-20 06:50:37,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:50:37,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:50:37,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:50:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:50:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:50:37,918 INFO L87 Difference]: Start difference. First operand 4441 states and 6244 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:50:45,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:50:47,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:50:49,255 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 [] [2021-11-20 06:51:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:51:01,659 INFO L93 Difference]: Finished difference Result 8989 states and 12678 transitions. [2021-11-20 06:51:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:51:01,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2021-11-20 06:51:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:51:01,702 INFO L225 Difference]: With dead ends: 8989 [2021-11-20 06:51:01,703 INFO L226 Difference]: Without dead ends: 4552 [2021-11-20 06:51:01,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:51:01,722 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 1251 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 1186 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 6395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 5206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:51:01,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 4074 Invalid, 6395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 5206 Invalid, 3 Unknown, 0 Unchecked, 23.5s Time] [2021-11-20 06:51:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2021-11-20 06:51:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4443. [2021-11-20 06:51:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 3110 states have (on average 1.3070739549839228) internal successors, (4065), 3162 states have internal predecessors, (4065), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2021-11-20 06:51:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 6246 transitions. [2021-11-20 06:51:01,987 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 6246 transitions. Word has length 194 [2021-11-20 06:51:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:51:01,988 INFO L470 AbstractCegarLoop]: Abstraction has 4443 states and 6246 transitions. [2021-11-20 06:51:01,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:51:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 6246 transitions. [2021-11-20 06:51:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-20 06:51:01,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:51:01,999 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:51:02,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:51:02,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:51:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:51:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 831976557, now seen corresponding path program 1 times [2021-11-20 06:51:02,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:51:02,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424713259] [2021-11-20 06:51:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:51:02,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:51:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:51:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:51:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:51:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:51:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 06:51:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:51:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:51:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:51:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:51:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:51:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:51:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:51:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:51:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 06:51:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-20 06:51:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-20 06:51:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-20 06:51:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-20 06:51:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:51:02,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:51:02,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424713259] [2021-11-20 06:51:02,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424713259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:51:02,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:51:02,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:51:02,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397943730] [2021-11-20 06:51:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:51:02,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:51:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:51:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:51:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:51:02,921 INFO L87 Difference]: Start difference. First operand 4443 states and 6246 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-20 06:51:17,087 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 [] [2021-11-20 06:51:19,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:21,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:23,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:25,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:27,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:29,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:31,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:33,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:51:35,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:52:04,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 06:52:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:17,016 INFO L93 Difference]: Finished difference Result 9205 states and 13058 transitions. [2021-11-20 06:52:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:52:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 194 [2021-11-20 06:52:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:17,056 INFO L225 Difference]: With dead ends: 9205 [2021-11-20 06:52:17,056 INFO L226 Difference]: Without dead ends: 4766 [2021-11-20 06:52:17,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:52:17,080 INFO L933 BasicCegarLoop]: 1827 mSDtfsCounter, 1491 mSDsluCounter, 8323 mSDsCounter, 0 mSdLazyCounter, 13843 mSolverCounterSat, 1587 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 10150 SdHoareTripleChecker+Invalid, 15440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1587 IncrementalHoareTripleChecker+Valid, 13843 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:17,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 10150 Invalid, 15440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1587 Valid, 13843 Invalid, 10 Unknown, 0 Unchecked, 73.5s Time] [2021-11-20 06:52:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2021-11-20 06:52:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4489. [2021-11-20 06:52:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 3144 states have (on average 1.3094783715012723) internal successors, (4117), 3198 states have internal predecessors, (4117), 1082 states have call successors, (1082), 252 states have call predecessors, (1082), 262 states have return successors, (1137), 1070 states have call predecessors, (1137), 1081 states have call successors, (1137) [2021-11-20 06:52:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6336 transitions. [2021-11-20 06:52:17,363 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6336 transitions. Word has length 194 [2021-11-20 06:52:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:17,364 INFO L470 AbstractCegarLoop]: Abstraction has 4489 states and 6336 transitions. [2021-11-20 06:52:17,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-20 06:52:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6336 transitions. [2021-11-20 06:52:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 06:52:17,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:17,377 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:52:17,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:52:17,378 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:52:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1510165053, now seen corresponding path program 1 times [2021-11-20 06:52:17,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:17,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206313180] [2021-11-20 06:52:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:17,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:52:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:52:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 06:52:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:52:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:52:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:52:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:52:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:52:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-20 06:52:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-20 06:52:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-20 06:52:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-20 06:52:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-20 06:52:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-20 06:52:18,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:18,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206313180] [2021-11-20 06:52:18,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206313180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:52:18,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503038991] [2021-11-20 06:52:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:18,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:52:18,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:52:18,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:52:19,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:52:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:20,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 7210 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:52:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:52:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-20 06:52:21,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:52:21,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503038991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:52:21,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:52:21,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 26 [2021-11-20 06:52:21,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567604758] [2021-11-20 06:52:21,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:52:21,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:52:21,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:52:21,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:52:21,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:52:21,349 INFO L87 Difference]: Start difference. First operand 4489 states and 6336 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 06:52:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:21,689 INFO L93 Difference]: Finished difference Result 8956 states and 12655 transitions. [2021-11-20 06:52:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:52:21,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 195 [2021-11-20 06:52:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:21,728 INFO L225 Difference]: With dead ends: 8956 [2021-11-20 06:52:21,728 INFO L226 Difference]: Without dead ends: 4459 [2021-11-20 06:52:21,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:52:21,752 INFO L933 BasicCegarLoop]: 2035 mSDtfsCounter, 6 mSDsluCounter, 8120 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10155 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:21,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10155 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:52:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2021-11-20 06:52:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4455. [2021-11-20 06:52:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 3118 states have (on average 1.3075689544579858) internal successors, (4077), 3174 states have internal predecessors, (4077), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 260 states have return successors, (1113), 1062 states have call predecessors, (1113), 1075 states have call successors, (1113) [2021-11-20 06:52:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 6266 transitions. [2021-11-20 06:52:22,012 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 6266 transitions. Word has length 195 [2021-11-20 06:52:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:22,013 INFO L470 AbstractCegarLoop]: Abstraction has 4455 states and 6266 transitions. [2021-11-20 06:52:22,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 06:52:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 6266 transitions. [2021-11-20 06:52:22,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-20 06:52:22,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:22,026 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:52:22,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:52:22,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:52:22,254 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:52:22,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash -257968389, now seen corresponding path program 2 times [2021-11-20 06:52:22,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:22,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632483487] [2021-11-20 06:52:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:22,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:52:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:52:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 06:52:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:52:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:52:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:52:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:52:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 06:52:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 06:52:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:52:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-20 06:52:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-20 06:52:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-20 06:52:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:24,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-20 06:52:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-20 06:52:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 06:52:24,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:24,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632483487] [2021-11-20 06:52:24,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632483487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:52:24,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913713666] [2021-11-20 06:52:24,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:52:24,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:52:24,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:52:24,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:52:24,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:52:25,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:52:25,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:52:25,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 7222 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-20 06:52:25,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:52:26,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-20 06:53:04,849 WARN L860 $PredicateComparison]: unable to prove that (exists ((|#Ultimate.C_memset_#value| Int) (|#Ultimate.C_memset_#ptr.offset| Int) (|v_#Ultimate.C_memset_#t~loopctr1627_5| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_5| |#Ultimate.C_memset_#ptr.offset|) |#Ultimate.C_memset_#value|)))) is different from true [2021-11-20 06:53:06,896 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_4| Int) (|#Ultimate.C_memset_#ptr.offset| Int) (|#Ultimate.C_memset_#value| Int) (|v_#Ultimate.C_memset_#t~loopctr1627_5| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_4| (store (select |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_4|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_5| |#Ultimate.C_memset_#ptr.offset|) |#Ultimate.C_memset_#value|))) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_4|))) is different from true [2021-11-20 06:53:06,985 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-20 06:53:06,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 25 [2021-11-20 06:53:06,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 06:53:10,674 WARN L860 $PredicateComparison]: unable to prove that (exists ((|#Ultimate.C_memset_#value| Int) (|#Ultimate.C_memset_#ptr.offset| Int) (|v_#Ultimate.C_memset_#t~loopctr1627_6| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_6| |#Ultimate.C_memset_#ptr.offset|) |#Ultimate.C_memset_#value|)))) is different from true [2021-11-20 06:53:12,717 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_5| Int) (|#Ultimate.C_memset_#ptr.offset| Int) (|#Ultimate.C_memset_#value| Int) (|v_#Ultimate.C_memset_#t~loopctr1627_6| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_5| (store (select |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_5|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_6| |#Ultimate.C_memset_#ptr.offset|) |#Ultimate.C_memset_#value|))) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_5|))) is different from true [2021-11-20 06:53:12,803 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-20 06:53:12,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 25 [2021-11-20 06:53:12,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 06:53:18,674 WARN L860 $PredicateComparison]: unable to prove that (exists ((|#Ultimate.C_memset_#ptr.offset| Int) (|v_#Ultimate.C_memset_#t~loopctr1627_7| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_7| |#Ultimate.C_memset_#ptr.offset|) |c_#Ultimate.C_memset_#value|)))) is different from true [2021-11-20 06:53:20,716 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_6| Int) (|#Ultimate.C_memset_#ptr.offset| Int) (|v_#Ultimate.C_memset_#t~loopctr1627_7| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_6| (store (select |c_old(#memory_int)| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_6|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_7| |#Ultimate.C_memset_#ptr.offset|) |c_ldv_memset_#in~c|))) (<= |c_ldv_memset_#in~s.base| |v_#Ultimate.C_memset_#ptr.base_AFTER_CALL_6|))) is different from true [2021-11-20 06:53:20,790 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-20 06:53:20,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 25 [2021-11-20 06:53:20,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 06:53:27,504 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:53:27,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 42 [2021-11-20 06:53:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 27 not checked. [2021-11-20 06:53:27,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:34,427 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr1627_16| Int) (bdc_gadget_ep_enable_~desc.offset Int) (|v_#Ultimate.C_memset_#ptr.base_8| Int) (|v_#Ultimate.C_memset_#ptr.offset_8| Int)) (or (< |v_#Ultimate.C_memset_#ptr.base_8| |c_ULTIMATE.start_ldv_main_exported_3_~#ldvarg1~0#1.base|) (not (= 5 (mod (select (select (store |c_#memory_int| |v_#Ultimate.C_memset_#ptr.base_8| (store (select |c_#memory_int| |v_#Ultimate.C_memset_#ptr.base_8|) (+ |v_#Ultimate.C_memset_#t~loopctr1627_16| |v_#Ultimate.C_memset_#ptr.offset_8|) 0)) |c_ULTIMATE.start_ldv_main_exported_3_~ldvarg0~0#1.base|) (+ bdc_gadget_ep_enable_~desc.offset 1)) 256))))) is different from false [2021-11-20 06:53:34,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913713666] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:53:34,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:53:34,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 46 [2021-11-20 06:53:34,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121858759] [2021-11-20 06:53:34,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:53:34,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 06:53:34,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 06:53:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1638, Unknown=34, NotChecked=616, Total=2450 [2021-11-20 06:53:34,434 INFO L87 Difference]: Start difference. First operand 4455 states and 6266 transitions. Second operand has 46 states, 37 states have (on average 3.918918918918919) internal successors, (145), 37 states have internal predecessors, (145), 19 states have call successors, (42), 9 states have call predecessors, (42), 14 states have return successors, (32), 18 states have call predecessors, (32), 17 states have call successors, (32) [2021-11-20 06:57:05,089 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 [] [2021-11-20 06:57:07,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:09,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:11,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:13,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:15,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:17,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:19,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:21,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:23,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:25,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:27,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:29,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:31,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:33,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:35,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:37,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:39,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:52,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:59:39,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:00:30,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:00:32,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:00:34,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:00:36,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:00:38,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:01:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:42,778 INFO L93 Difference]: Finished difference Result 14025 states and 19982 transitions. [2021-11-20 07:01:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-20 07:01:42,779 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 37 states have (on average 3.918918918918919) internal successors, (145), 37 states have internal predecessors, (145), 19 states have call successors, (42), 9 states have call predecessors, (42), 14 states have return successors, (32), 18 states have call predecessors, (32), 17 states have call successors, (32) Word has length 197 [2021-11-20 07:01:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:42,843 INFO L225 Difference]: With dead ends: 14025 [2021-11-20 07:01:42,843 INFO L226 Difference]: Without dead ends: 9574 [2021-11-20 07:01:42,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 285.5s TimeCoverageRelationStatistics Valid=534, Invalid=5995, Unknown=141, NotChecked=1162, Total=7832 [2021-11-20 07:01:42,872 INFO L933 BasicCegarLoop]: 2800 mSDtfsCounter, 3554 mSDsluCounter, 32812 mSDsCounter, 0 mSdLazyCounter, 46686 mSolverCounterSat, 2823 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3894 SdHoareTripleChecker+Valid, 35612 SdHoareTripleChecker+Invalid, 76469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2823 IncrementalHoareTripleChecker+Valid, 46686 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 26936 IncrementalHoareTripleChecker+Unchecked, 268.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3894 Valid, 35612 Invalid, 76469 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2823 Valid, 46686 Invalid, 24 Unknown, 26936 Unchecked, 268.4s Time] [2021-11-20 07:01:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9574 states. [2021-11-20 07:01:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9574 to 9061. [2021-11-20 07:01:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9061 states, 6385 states have (on average 1.3148003132341426) internal successors, (8395), 6499 states have internal predecessors, (8395), 2145 states have call successors, (2145), 505 states have call predecessors, (2145), 530 states have return successors, (2307), 2120 states have call predecessors, (2307), 2144 states have call successors, (2307) [2021-11-20 07:01:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9061 states to 9061 states and 12847 transitions. [2021-11-20 07:01:43,657 INFO L78 Accepts]: Start accepts. Automaton has 9061 states and 12847 transitions. Word has length 197 [2021-11-20 07:01:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:43,658 INFO L470 AbstractCegarLoop]: Abstraction has 9061 states and 12847 transitions. [2021-11-20 07:01:43,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 37 states have (on average 3.918918918918919) internal successors, (145), 37 states have internal predecessors, (145), 19 states have call successors, (42), 9 states have call predecessors, (42), 14 states have return successors, (32), 18 states have call predecessors, (32), 17 states have call successors, (32) [2021-11-20 07:01:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9061 states and 12847 transitions. [2021-11-20 07:01:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-20 07:01:43,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:43,681 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:43,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:01:43,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 07:01:43,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:01:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -938720011, now seen corresponding path program 3 times [2021-11-20 07:01:43,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:43,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742768693] [2021-11-20 07:01:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:43,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:01:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:01:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:01:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:01:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 07:01:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:01:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 07:01:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:01:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:01:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:01:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:01:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:01:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 07:01:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:01:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 07:01:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 07:01:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-20 07:01:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-20 07:01:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-20 07:01:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 35 proven. 13 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-20 07:01:46,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:46,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742768693] [2021-11-20 07:01:46,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742768693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:01:46,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855943105] [2021-11-20 07:01:46,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:01:46,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:01:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:01:46,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:01:46,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80464cb-7af8-49dc-9c57-06359e62506d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:01:48,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 07:01:48,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:01:48,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 6858 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 07:01:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:01:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-20 07:01:48,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:01:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-20 07:01:50,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855943105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:01:50,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:01:50,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 8, 8] total 35 [2021-11-20 07:01:50,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023170772] [2021-11-20 07:01:50,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:01:50,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 07:01:50,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 07:01:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 07:01:50,282 INFO L87 Difference]: Start difference. First operand 9061 states and 12847 transitions. Second operand has 35 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 12 states have call successors, (42), 7 states have call predecessors, (42), 9 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2021-11-20 07:02:43,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:02:45,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:02:48,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:02:50,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:02:52,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:02:54,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []