./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:34:19,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:34:19,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:34:19,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:34:19,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:34:19,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:34:19,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:34:19,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:34:19,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:34:19,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:34:19,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:34:19,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:34:19,242 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:34:19,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:34:19,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:34:19,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:34:19,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:34:19,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:34:19,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:34:19,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:34:19,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:34:19,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:34:19,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:34:19,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:34:19,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:34:19,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:34:19,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:34:19,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:34:19,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:34:19,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:34:19,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:34:19,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:34:19,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:34:19,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:34:19,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:34:19,254 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:34:19,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2023-11-12 02:34:19,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:34:19,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:34:19,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:34:19,621 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:34:19,622 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:34:19,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2023-11-12 02:34:22,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:34:23,324 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:34:23,325 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2023-11-12 02:34:23,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/data/14c9bcdaa/9fc247a6873940f9a756a7a2aa3e0e0f/FLAG6eaef90d8 [2023-11-12 02:34:23,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/data/14c9bcdaa/9fc247a6873940f9a756a7a2aa3e0e0f [2023-11-12 02:34:23,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:34:23,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:34:23,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:34:23,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:34:23,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:34:23,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:34:23" (1/1) ... [2023-11-12 02:34:23,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f5d9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:23, skipping insertion in model container [2023-11-12 02:34:23,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:34:23" (1/1) ... [2023-11-12 02:34:23,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:34:24,821 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_8eee9652-ef12-404d-81d5-0408d3191fcf/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2023-11-12 02:34:25,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:34:25,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:34:25,820 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_8eee9652-ef12-404d-81d5-0408d3191fcf/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2023-11-12 02:34:26,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:34:26,101 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:34:26,109 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:34:26,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26 WrapperNode [2023-11-12 02:34:26,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:34:26,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:34:26,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:34:26,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:34:26,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,371 INFO L138 Inliner]: procedures = 183, calls = 1631, calls flagged for inlining = 85, calls inlined = 66, statements flattened = 3148 [2023-11-12 02:34:26,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:34:26,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:34:26,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:34:26,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:34:26,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:34:26,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:34:26,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:34:26,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:34:26,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (1/1) ... [2023-11-12 02:34:26,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:34:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:34:26,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:34:26,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8eee9652-ef12-404d-81d5-0408d3191fcf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:34:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 02:34:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 02:34:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2023-11-12 02:34:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2023-11-12 02:34:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:34:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_5 [2023-11-12 02:34:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_5 [2023-11-12 02:34:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2023-11-12 02:34:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2023-11-12 02:34:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:34:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-12 02:34:26,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-12 02:34:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:34:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 02:34:26,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 02:34:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:34:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-11-12 02:34:26,794 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-11-12 02:34:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-12 02:34:26,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-12 02:34:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 02:34:26,795 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 02:34:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 02:34:26,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 02:34:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2023-11-12 02:34:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2023-11-12 02:34:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:34:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:34:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-12 02:34:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-12 02:34:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure device_unlock [2023-11-12 02:34:26,798 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unlock [2023-11-12 02:34:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 02:34:26,799 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 02:34:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2023-11-12 02:34:26,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2023-11-12 02:34:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:34:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_skb [2023-11-12 02:34:26,800 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_skb [2023-11-12 02:34:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:34:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:34:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-11-12 02:34:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-11-12 02:34:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2023-11-12 02:34:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2023-11-12 02:34:26,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:34:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:34:26,802 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2023-11-12 02:34:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2023-11-12 02:34:26,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 02:34:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 02:34:26,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:34:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:34:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:34:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2023-11-12 02:34:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2023-11-12 02:34:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-12 02:34:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-12 02:34:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2023-11-12 02:34:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2023-11-12 02:34:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 02:34:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 02:34:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:34:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2023-11-12 02:34:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2023-11-12 02:34:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2023-11-12 02:34:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2023-11-12 02:34:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 02:34:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 02:34:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-12 02:34:26,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-12 02:34:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:34:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:34:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2023-11-12 02:34:26,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2023-11-12 02:34:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 02:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 02:34:26,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 02:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2023-11-12 02:34:26,809 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2023-11-12 02:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 02:34:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 02:34:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:34:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2023-11-12 02:34:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2023-11-12 02:34:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-12 02:34:26,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-12 02:34:26,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2023-11-12 02:34:26,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2023-11-12 02:34:26,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:34:26,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:34:26,811 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-12 02:34:26,812 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-12 02:34:26,812 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2023-11-12 02:34:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2023-11-12 02:34:26,813 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2023-11-12 02:34:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2023-11-12 02:34:26,813 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2023-11-12 02:34:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2023-11-12 02:34:26,813 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 02:34:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 02:34:26,814 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-12 02:34:26,814 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-12 02:34:26,814 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-12 02:34:26,814 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-12 02:34:26,814 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 02:34:26,814 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 02:34:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2023-11-12 02:34:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2023-11-12 02:34:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-12 02:34:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-12 02:34:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-12 02:34:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-12 02:34:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2023-11-12 02:34:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2023-11-12 02:34:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-12 02:34:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-12 02:34:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:34:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-12 02:34:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-12 02:34:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2023-11-12 02:34:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2023-11-12 02:34:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:34:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 02:34:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 02:34:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-12 02:34:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-12 02:34:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:34:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:34:27,425 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:34:27,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:34:27,807 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 02:34:29,005 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-12 02:34:50,360 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:34:50,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:34:50,377 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:34:50,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:34:50 BoogieIcfgContainer [2023-11-12 02:34:50,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:34:50,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:34:50,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:34:50,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:34:50,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:34:23" (1/3) ... [2023-11-12 02:34:50,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450aa70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:34:50, skipping insertion in model container [2023-11-12 02:34:50,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:26" (2/3) ... [2023-11-12 02:34:50,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450aa70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:34:50, skipping insertion in model container [2023-11-12 02:34:50,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:34:50" (3/3) ... [2023-11-12 02:34:50,389 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2023-11-12 02:34:50,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:34:50,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:34:50,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:34:50,501 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=PETRI_NET, 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;@4036d298, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:34:50,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:34:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 931 states, 673 states have (on average 1.3833580980683506) internal successors, (931), 699 states have internal predecessors, (931), 202 states have call successors, (202), 56 states have call predecessors, (202), 54 states have return successors, (197), 194 states have call predecessors, (197), 197 states have call successors, (197) [2023-11-12 02:34:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:34:50,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:50,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:50,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:50,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -8126071, now seen corresponding path program 1 times [2023-11-12 02:34:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:50,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751578402] [2023-11-12 02:34:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:34:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:34:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:34:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751578402] [2023-11-12 02:34:52,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751578402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:52,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:52,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:34:52,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147073357] [2023-11-12 02:34:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:52,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:34:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:52,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:34:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:34:52,246 INFO L87 Difference]: Start difference. First operand has 931 states, 673 states have (on average 1.3833580980683506) internal successors, (931), 699 states have internal predecessors, (931), 202 states have call successors, (202), 56 states have call predecessors, (202), 54 states have return successors, (197), 194 states have call predecessors, (197), 197 states have call successors, (197) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:34:54,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:34:56,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:34:58,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:35:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:35:02,838 INFO L93 Difference]: Finished difference Result 3091 states and 4545 transitions. [2023-11-12 02:35:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:35:02,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-12 02:35:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:35:02,883 INFO L225 Difference]: With dead ends: 3091 [2023-11-12 02:35:02,883 INFO L226 Difference]: Without dead ends: 2143 [2023-11-12 02:35:02,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:35:02,899 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 2453 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 1233 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1233 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:35:02,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2584 Valid, 3265 Invalid, 2406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1233 Valid, 1170 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2023-11-12 02:35:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-11-12 02:35:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1802. [2023-11-12 02:35:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1310 states have (on average 1.350381679389313) internal successors, (1769), 1344 states have internal predecessors, (1769), 386 states have call successors, (386), 106 states have call predecessors, (386), 105 states have return successors, (381), 375 states have call predecessors, (381), 381 states have call successors, (381) [2023-11-12 02:35:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2536 transitions. [2023-11-12 02:35:03,113 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2536 transitions. Word has length 28 [2023-11-12 02:35:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:35:03,113 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2536 transitions. [2023-11-12 02:35:03,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:35:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2536 transitions. [2023-11-12 02:35:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 02:35:03,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:35:03,118 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:35:03,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:35:03,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:35:03,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:35:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1090804091, now seen corresponding path program 1 times [2023-11-12 02:35:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:35:03,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357055450] [2023-11-12 02:35:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:35:03,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:35:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:35:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:35:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:35:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:35:04,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:35:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357055450] [2023-11-12 02:35:04,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357055450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:35:04,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:35:04,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:35:04,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221845951] [2023-11-12 02:35:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:35:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:35:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:35:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:35:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:35:04,593 INFO L87 Difference]: Start difference. First operand 1802 states and 2536 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:35:06,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:35:08,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:35:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:35:13,348 INFO L93 Difference]: Finished difference Result 6046 states and 8683 transitions. [2023-11-12 02:35:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:35:13,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2023-11-12 02:35:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:35:13,391 INFO L225 Difference]: With dead ends: 6046 [2023-11-12 02:35:13,391 INFO L226 Difference]: Without dead ends: 4262 [2023-11-12 02:35:13,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:35:13,404 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 2302 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 1129 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2425 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:35:13,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2425 Valid, 3484 Invalid, 2418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1129 Valid, 1287 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2023-11-12 02:35:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2023-11-12 02:35:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 3575. [2023-11-12 02:35:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2602 states have (on average 1.3497309761721752) internal successors, (3512), 2666 states have internal predecessors, (3512), 764 states have call successors, (764), 209 states have call predecessors, (764), 208 states have return successors, (793), 747 states have call predecessors, (793), 759 states have call successors, (793) [2023-11-12 02:35:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 5069 transitions. [2023-11-12 02:35:13,719 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 5069 transitions. Word has length 38 [2023-11-12 02:35:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:35:13,720 INFO L495 AbstractCegarLoop]: Abstraction has 3575 states and 5069 transitions. [2023-11-12 02:35:13,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:35:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 5069 transitions. [2023-11-12 02:35:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:35:13,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:35:13,728 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:35:13,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:35:13,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:35:13,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:35:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash 544377427, now seen corresponding path program 1 times [2023-11-12 02:35:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:35:13,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079254129] [2023-11-12 02:35:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:35:13,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:35:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:35:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:35:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:15,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:35:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:35:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:35:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079254129] [2023-11-12 02:35:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079254129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:35:15,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:35:15,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:35:15,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125380999] [2023-11-12 02:35:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:35:15,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:35:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:35:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:35:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:35:15,050 INFO L87 Difference]: Start difference. First operand 3575 states and 5069 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)