./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.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_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:52,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:52,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:31:52,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:52,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:52,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:52,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:52,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:52,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:52,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:52,371 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:52,371 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:52,372 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:52,374 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:31:52,374 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:52,375 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:52,375 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:31:52,376 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:31:52,376 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:52,376 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:31:52,377 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:31:52,378 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:31:52,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:52,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:52,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:31:52,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:52,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:52,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:52,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:52,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:52,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:52,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:52,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:52,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:52,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:52,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:52,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:52,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:52,386 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:31:52,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:31:52,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:52,387 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:52,387 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:52,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:52,388 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2023-11-23 20:31:52,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:52,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:52,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:52,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:52,763 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:52,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 20:31:56,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:56,726 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:56,727 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/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 [2023-11-23 20:31:56,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/data/811442e3d/cedb002e0cab4116a7e85123a5d1cc44/FLAGb83dc2480 [2023-11-23 20:31:56,800 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/data/811442e3d/cedb002e0cab4116a7e85123a5d1cc44 [2023-11-23 20:31:56,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:56,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:56,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:56,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:56,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:56,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:56" (1/1) ... [2023-11-23 20:31:56,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57614f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:56, skipping insertion in model container [2023-11-23 20:31:56,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:56" (1/1) ... [2023-11-23 20:31:57,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:31:59,513 WARN L240 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_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/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] [2023-11-23 20:31:59,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:59,597 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:31:59,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3507] [2023-11-23 20:31:59,775 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [3635] [2023-11-23 20:31:59,776 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [3642] [2023-11-23 20:31:59,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [4961] [2023-11-23 20:31:59,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6300] [2023-11-23 20:32:00,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [9460] [2023-11-23 20:32:00,266 WARN L240 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_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/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] [2023-11-23 20:32:00,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:00,369 WARN L675 CHandler]: The function ldv_calloc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:00,378 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:00,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00 WrapperNode [2023-11-23 20:32:00,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:00,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:00,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:00,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:00,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:00,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:00,825 INFO L138 Inliner]: procedures = 274, calls = 6062, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6919 [2023-11-23 20:32:00,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:00,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:00,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:00,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:00,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:00,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:00,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:00,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:01,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:01,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:01,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:01,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:01,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:01,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:01,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:01,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:01,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (1/1) ... [2023-11-23 20:32:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:01,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43412e5d-24ea-4c10-b724-bf8ea2d8a8b8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:01,284 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2023-11-23 20:32:01,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2023-11-23 20:32:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2023-11-23 20:32:01,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2023-11-23 20:32:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2023-11-23 20:32:01,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2023-11-23 20:32:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:32:01,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:32:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2023-11-23 20:32:01,286 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2023-11-23 20:32:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:32:01,287 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:32:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-23 20:32:01,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-23 20:32:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 20:32:01,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 20:32:01,289 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2023-11-23 20:32:01,289 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2023-11-23 20:32:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:32:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:32:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-23 20:32:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-23 20:32:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2023-11-23 20:32:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2023-11-23 20:32:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2023-11-23 20:32:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2023-11-23 20:32:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:32:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:32:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:32:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:32:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2023-11-23 20:32:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2023-11-23 20:32:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:32:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:32:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2023-11-23 20:32:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2023-11-23 20:32:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2023-11-23 20:32:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2023-11-23 20:32:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2023-11-23 20:32:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2023-11-23 20:32:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2023-11-23 20:32:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2023-11-23 20:32:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2023-11-23 20:32:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2023-11-23 20:32:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2023-11-23 20:32:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2023-11-23 20:32:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:32:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 20:32:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 20:32:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2023-11-23 20:32:01,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2023-11-23 20:32:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:32:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 20:32:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 20:32:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:32:01,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 20:32:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2023-11-23 20:32:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2023-11-23 20:32:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:32:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:32:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:32:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:32:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2023-11-23 20:32:01,302 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2023-11-23 20:32:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:32:01,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:32:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2023-11-23 20:32:01,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2023-11-23 20:32:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 20:32:01,303 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 20:32:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:32:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:32:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2023-11-23 20:32:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2023-11-23 20:32:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:32:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:32:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2023-11-23 20:32:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2023-11-23 20:32:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 20:32:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 20:32:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2023-11-23 20:32:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2023-11-23 20:32:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2023-11-23 20:32:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2023-11-23 20:32:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2023-11-23 20:32:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2023-11-23 20:32:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2023-11-23 20:32:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2023-11-23 20:32:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 20:32:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 20:32:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2023-11-23 20:32:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2023-11-23 20:32:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-23 20:32:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-23 20:32:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:32:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2023-11-23 20:32:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2023-11-23 20:32:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2023-11-23 20:32:01,309 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2023-11-23 20:32:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2023-11-23 20:32:01,309 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2023-11-23 20:32:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2023-11-23 20:32:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2023-11-23 20:32:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2023-11-23 20:32:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2023-11-23 20:32:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 20:32:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 20:32:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:32:01,312 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:32:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2023-11-23 20:32:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2023-11-23 20:32:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-23 20:32:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-23 20:32:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:32:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 20:32:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 20:32:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-23 20:32:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-23 20:32:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:32:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:32:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:32:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:32:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:32:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-11-23 20:32:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:32:01,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2023-11-23 20:32:01,316 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2023-11-23 20:32:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2023-11-23 20:32:01,318 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2023-11-23 20:32:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2023-11-23 20:32:01,318 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2023-11-23 20:32:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 20:32:01,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 20:32:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:32:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2023-11-23 20:32:01,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2023-11-23 20:32:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2023-11-23 20:32:01,320 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2023-11-23 20:32:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2023-11-23 20:32:01,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2023-11-23 20:32:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2023-11-23 20:32:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2023-11-23 20:32:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2023-11-23 20:32:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2023-11-23 20:32:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2023-11-23 20:32:01,327 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2023-11-23 20:32:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2023-11-23 20:32:01,327 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2023-11-23 20:32:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2023-11-23 20:32:01,334 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2023-11-23 20:32:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2023-11-23 20:32:01,335 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2023-11-23 20:32:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:32:01,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:32:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2023-11-23 20:32:01,335 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2023-11-23 20:32:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2023-11-23 20:32:01,335 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2023-11-23 20:32:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-23 20:32:01,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-23 20:32:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2023-11-23 20:32:01,336 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2023-11-23 20:32:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:01,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2023-11-23 20:32:01,336 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2023-11-23 20:32:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2023-11-23 20:32:01,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2023-11-23 20:32:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2023-11-23 20:32:01,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2023-11-23 20:32:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 20:32:01,337 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 20:32:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2023-11-23 20:32:01,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2023-11-23 20:32:02,115 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:02,120 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:03,885 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:32:14,433 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:16,404 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:16,404 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:32:16,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:16 BoogieIcfgContainer [2023-11-23 20:32:16,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:16,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:16,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:16,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:16,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:56" (1/3) ... [2023-11-23 20:32:16,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27857150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:16, skipping insertion in model container [2023-11-23 20:32:16,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:00" (2/3) ... [2023-11-23 20:32:16,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27857150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:16, skipping insertion in model container [2023-11-23 20:32:16,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:16" (3/3) ... [2023-11-23 20:32:16,419 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2023-11-23 20:32:16,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:16,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:16,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:16,546 INFO L357 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5498293b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:16,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 1548 states, 972 states have (on average 1.3024691358024691) internal successors, (1266), 994 states have internal predecessors, (1266), 493 states have call successors, (493), 82 states have call predecessors, (493), 81 states have return successors, (488), 488 states have call predecessors, (488), 488 states have call successors, (488) [2023-11-23 20:32:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 20:32:16,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:16,583 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 20:32:16,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:16,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1219522135, now seen corresponding path program 1 times [2023-11-23 20:32:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460726182] [2023-11-23 20:32:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:16,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 20:32:17,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460726182] [2023-11-23 20:32:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460726182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:17,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:17,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:17,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721274305] [2023-11-23 20:32:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:17,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:17,930 INFO L87 Difference]: Start difference. First operand has 1548 states, 972 states have (on average 1.3024691358024691) internal successors, (1266), 994 states have internal predecessors, (1266), 493 states have call successors, (493), 82 states have call predecessors, (493), 81 states have return successors, (488), 488 states have call predecessors, (488), 488 states have call successors, (488) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 20:32:20,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:22,432 INFO L93 Difference]: Finished difference Result 4203 states and 6115 transitions. [2023-11-23 20:32:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:22,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-11-23 20:32:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:22,499 INFO L225 Difference]: With dead ends: 4203 [2023-11-23 20:32:22,500 INFO L226 Difference]: Without dead ends: 2641 [2023-11-23 20:32:22,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:22,523 INFO L413 NwaCegarLoop]: 2261 mSDtfsCounter, 1582 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:22,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 4306 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 20:32:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2023-11-23 20:32:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2637. [2023-11-23 20:32:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 1652 states have (on average 1.286319612590799) internal successors, (2125), 1678 states have internal predecessors, (2125), 840 states have call successors, (840), 145 states have call predecessors, (840), 144 states have return successors, (839), 838 states have call predecessors, (839), 839 states have call successors, (839) [2023-11-23 20:32:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3804 transitions. [2023-11-23 20:32:22,982 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3804 transitions. Word has length 59 [2023-11-23 20:32:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:22,983 INFO L495 AbstractCegarLoop]: Abstraction has 2637 states and 3804 transitions. [2023-11-23 20:32:22,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 20:32:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3804 transitions. [2023-11-23 20:32:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 20:32:22,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:22,996 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 20:32:22,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:22,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:22,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1028146436, now seen corresponding path program 1 times [2023-11-23 20:32:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:22,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745582824] [2023-11-23 20:32:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-23 20:32:24,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745582824] [2023-11-23 20:32:24,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745582824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:24,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:24,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615865523] [2023-11-23 20:32:24,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:24,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:24,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:24,704 INFO L87 Difference]: Start difference. First operand 2637 states and 3804 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 20:32:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:29,635 INFO L93 Difference]: Finished difference Result 4748 states and 6866 transitions. [2023-11-23 20:32:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:29,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (14), 3 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 117 [2023-11-23 20:32:29,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:29,680 INFO L225 Difference]: With dead ends: 4748 [2023-11-23 20:32:29,681 INFO L226 Difference]: Without dead ends: 4745 [2023-11-23 20:32:29,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:29,687 INFO L413 NwaCegarLoop]: 2413 mSDtfsCounter, 1621 mSDsluCounter, 4435 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 6848 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:29,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 6848 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-23 20:32:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2023-11-23 20:32:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 4710. [2023-11-23 20:32:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 2961 states have (on average 1.2894292468760553) internal successors, (3818), 3016 states have internal predecessors, (3818), 1489 states have call successors, (1489), 264 states have call predecessors, (1489), 259 states have return successors, (1501), 1473 states have call predecessors, (1501), 1488 states have call successors, (1501) [2023-11-23 20:32:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 6808 transitions. [2023-11-23 20:32:30,062 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 6808 transitions. Word has length 117 [2023-11-23 20:32:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:30,065 INFO L495 AbstractCegarLoop]: Abstraction has 4710 states and 6808 transitions. [2023-11-23 20:32:30,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 20:32:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 6808 transitions. [2023-11-23 20:32:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 20:32:30,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:30,082 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 20:32:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:32:30,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:30,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 373997921, now seen corresponding path program 1 times [2023-11-23 20:32:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:30,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797842764] [2023-11-23 20:32:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:30,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 20:32:34,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797842764] [2023-11-23 20:32:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797842764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:34,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:34,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 20:32:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132615774] [2023-11-23 20:32:34,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:34,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 20:32:34,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 20:32:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:32:34,556 INFO L87 Difference]: Start difference. First operand 4710 states and 6808 transitions. Second operand has 12 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18)