./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2 --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 d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:26:47,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:26:47,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 11:26:47,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:26:47,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:26:47,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:26:47,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:26:47,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:26:47,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:26:47,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:26:47,202 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:26:47,203 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:26:47,203 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:26:47,204 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:26:47,204 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:26:47,204 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:26:47,205 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:26:47,205 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:26:47,205 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:26:47,206 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:26:47,206 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:26:47,207 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:26:47,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:26:47,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:26:47,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:26:47,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:26:47,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:26:47,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:26:47,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:26:47,211 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:26:47,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:26:47,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:26:47,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:26:47,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:26:47,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:26:47,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:26:47,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:26:47,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:26:47,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:26:47,215 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:26:47,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:26:47,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:26:47,216 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:26:47,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:26:47,216 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_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 [2024-11-02 11:26:47,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:26:47,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:26:47,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:26:47,572 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:26:47,573 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:26:47,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i Unable to find full path for "g++" [2024-11-02 11:26:49,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:26:50,069 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:26:50,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2024-11-02 11:26:50,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/data/7350197b0/995ea2fec8ae44f580208f3a51159f77/FLAG1faf4ad98 [2024-11-02 11:26:50,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/data/7350197b0/995ea2fec8ae44f580208f3a51159f77 [2024-11-02 11:26:50,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:26:50,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:26:50,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:26:50,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:26:50,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:26:50,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:26:50" (1/1) ... [2024-11-02 11:26:50,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d537a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:50, skipping insertion in model container [2024-11-02 11:26:50,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:26:50" (1/1) ... [2024-11-02 11:26:50,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:26:51,292 WARN L251 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_66fab6a0-2430-4017-8acf-26efdd32f03a/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2024-11-02 11:26:51,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:26:51,497 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:26:51,781 WARN L251 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_66fab6a0-2430-4017-8acf-26efdd32f03a/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2024-11-02 11:26:51,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:26:51,885 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:26:51,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51 WrapperNode [2024-11-02 11:26:51,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:26:51,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:26:51,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:26:51,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:26:51,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:51,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,034 INFO L138 Inliner]: procedures = 82, calls = 541, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 2217 [2024-11-02 11:26:52,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:26:52,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:26:52,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:26:52,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:26:52,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:26:52,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:26:52,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:26:52,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:26:52,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (1/1) ... [2024-11-02 11:26:52,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:26:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:26:52,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:26:52,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fab6a0-2430-4017-8acf-26efdd32f03a/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:26:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:26:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2024-11-02 11:26:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2024-11-02 11:26:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 11:26:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 11:26:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2024-11-02 11:26:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2024-11-02 11:26:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 11:26:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 11:26:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 11:26:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2024-11-02 11:26:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2024-11-02 11:26:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-02 11:26:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-02 11:26:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 11:26:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 11:26:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2024-11-02 11:26:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2024-11-02 11:26:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:26:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-02 11:26:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-02 11:26:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 11:26:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 11:26:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-02 11:26:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-02 11:26:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 11:26:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2024-11-02 11:26:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2024-11-02 11:26:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2024-11-02 11:26:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2024-11-02 11:26:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-02 11:26:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-02 11:26:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2024-11-02 11:26:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2024-11-02 11:26:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2024-11-02 11:26:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2024-11-02 11:26:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2024-11-02 11:26:52,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2024-11-02 11:26:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:26:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 11:26:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:26:52,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:26:52,726 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:26:52,728 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:26:52,902 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2024-11-02 11:26:52,921 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 11:26:53,013 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2024-11-02 11:26:53,013 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2024-11-02 11:26:53,138 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 11:26:53,142 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 11:26:53,165 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 11:26:59,239 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##324: assume false; [2024-11-02 11:26:59,239 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume !false; [2024-11-02 11:26:59,240 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##73: assume false; [2024-11-02 11:26:59,240 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2024-11-02 11:26:59,241 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2024-11-02 11:26:59,242 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##325: assume !false; [2024-11-02 11:26:59,417 INFO L? ?]: Removed 481 outVars from TransFormulas that were not future-live. [2024-11-02 11:26:59,417 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:27:00,339 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:27:00,339 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-02 11:27:00,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:27:00 BoogieIcfgContainer [2024-11-02 11:27:00,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:27:00,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:27:00,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:27:00,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:27:00,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:26:50" (1/3) ... [2024-11-02 11:27:00,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d6479d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:27:00, skipping insertion in model container [2024-11-02 11:27:00,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:51" (2/3) ... [2024-11-02 11:27:00,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d6479d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:27:00, skipping insertion in model container [2024-11-02 11:27:00,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:27:00" (3/3) ... [2024-11-02 11:27:00,352 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2024-11-02 11:27:00,377 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:27:00,377 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:27:00,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:27:00,494 INFO L333 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, 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;@7bd86181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:27:00,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:27:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 152 states have internal predecessors, (212), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-02 11:27:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 11:27:00,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:27:00,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:27:00,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:27:00,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:27:00,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1471932956, now seen corresponding path program 1 times [2024-11-02 11:27:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:27:00,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907848512] [2024-11-02 11:27:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:27:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:27:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:27:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:27:10,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:27:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907848512] [2024-11-02 11:27:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907848512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:27:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:27:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:27:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782736355] [2024-11-02 11:27:10,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:27:10,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:27:10,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:27:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:27:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:27:10,391 INFO L87 Difference]: Start difference. First operand has 204 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 152 states have internal predecessors, (212), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:27:12,475 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 [] [2024-11-02 11:27:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:27:14,385 INFO L93 Difference]: Finished difference Result 550 states and 824 transitions. [2024-11-02 11:27:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:27:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-02 11:27:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:27:14,413 INFO L225 Difference]: With dead ends: 550 [2024-11-02 11:27:14,418 INFO L226 Difference]: Without dead ends: 355 [2024-11-02 11:27:14,430 INFO L431 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 [2024-11-02 11:27:14,438 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 229 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-02 11:27:14,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 426 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2024-11-02 11:27:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-02 11:27:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 352. [2024-11-02 11:27:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 251 states have (on average 1.3386454183266931) internal successors, (336), 259 states have internal predecessors, (336), 76 states have call successors, (76), 25 states have call predecessors, (76), 24 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-02 11:27:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2024-11-02 11:27:14,573 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 485 transitions. Word has length 13 [2024-11-02 11:27:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:27:14,573 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 485 transitions. [2024-11-02 11:27:14,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:27:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 485 transitions. [2024-11-02 11:27:14,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 11:27:14,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:27:14,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:27:14,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:27:14,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:27:14,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:27:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1614568013, now seen corresponding path program 1 times [2024-11-02 11:27:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:27:14,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280160544] [2024-11-02 11:27:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:27:14,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms