./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 9bd2c7ff 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_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/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_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:45:23,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:24,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:45:24,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:24,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:24,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:24,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:24,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:24,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:24,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:24,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:24,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:24,194 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:24,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:24,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:24,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:24,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:24,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:24,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:24,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:24,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:24,201 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:24,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:24,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:24,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:24,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:24,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:24,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:24,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:24,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:24,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:24,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:24,214 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:24,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:24,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:24,215 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:24,215 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_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2023-11-19 07:45:24,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:24,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:24,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:24,605 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:24,606 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:24,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/../../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 [2023-11-19 07:45:27,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:28,335 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:28,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/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 [2023-11-19 07:45:28,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/data/89d6515b6/bfeaff53ad054aecabdca2eca351d634/FLAG732133569 [2023-11-19 07:45:28,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/data/89d6515b6/bfeaff53ad054aecabdca2eca351d634 [2023-11-19 07:45:28,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:28,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:28,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:28,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:28,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:28,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:28" (1/1) ... [2023-11-19 07:45:28,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f85059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:28, skipping insertion in model container [2023-11-19 07:45:28,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:28" (1/1) ... [2023-11-19 07:45:28,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:29,728 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_cd822b45-1ffe-4af3-bc74-345c09355ab8/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] [2023-11-19 07:45:30,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:30,454 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:30,688 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_cd822b45-1ffe-4af3-bc74-345c09355ab8/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] [2023-11-19 07:45:30,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:30,877 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:30,885 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:30,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30 WrapperNode [2023-11-19 07:45:30,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:30,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:30,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:30,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:30,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,145 INFO L138 Inliner]: procedures = 183, calls = 1631, calls flagged for inlining = 85, calls inlined = 66, statements flattened = 3148 [2023-11-19 07:45:31,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:31,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:31,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:31,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:31,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:31,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:31,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:31,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:31,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:31,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:31,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:31,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:31,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd822b45-1ffe-4af3-bc74-345c09355ab8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 07:45:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 07:45:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2023-11-19 07:45:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2023-11-19 07:45:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:45:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_5 [2023-11-19 07:45:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_5 [2023-11-19 07:45:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2023-11-19 07:45:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2023-11-19 07:45:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:45:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-19 07:45:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-19 07:45:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:45:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 07:45:31,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 07:45:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-11-19 07:45:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-11-19 07:45:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-19 07:45:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-19 07:45:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:45:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:45:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 07:45:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 07:45:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2023-11-19 07:45:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2023-11-19 07:45:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:45:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:45:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-19 07:45:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-19 07:45:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure device_unlock [2023-11-19 07:45:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unlock [2023-11-19 07:45:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 07:45:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 07:45:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2023-11-19 07:45:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2023-11-19 07:45:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_skb [2023-11-19 07:45:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_skb [2023-11-19 07:45:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:45:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:45:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-11-19 07:45:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-11-19 07:45:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2023-11-19 07:45:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2023-11-19 07:45:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:45:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:45:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2023-11-19 07:45:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2023-11-19 07:45:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:45:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:45:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:45:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:45:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:45:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2023-11-19 07:45:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2023-11-19 07:45:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-19 07:45:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-19 07:45:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2023-11-19 07:45:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2023-11-19 07:45:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 07:45:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 07:45:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2023-11-19 07:45:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2023-11-19 07:45:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2023-11-19 07:45:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2023-11-19 07:45:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 07:45:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 07:45:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 07:45:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 07:45:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:45:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2023-11-19 07:45:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2023-11-19 07:45:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 07:45:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:45:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:45:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2023-11-19 07:45:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2023-11-19 07:45:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 07:45:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 07:45:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:45:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2023-11-19 07:45:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2023-11-19 07:45:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-19 07:45:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-19 07:45:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2023-11-19 07:45:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2023-11-19 07:45:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:45:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-19 07:45:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-19 07:45:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2023-11-19 07:45:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2023-11-19 07:45:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2023-11-19 07:45:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2023-11-19 07:45:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2023-11-19 07:45:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2023-11-19 07:45:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:45:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:45:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-19 07:45:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-19 07:45:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-19 07:45:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-19 07:45:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 07:45:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 07:45:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2023-11-19 07:45:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2023-11-19 07:45:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-19 07:45:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-19 07:45:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-19 07:45:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-19 07:45:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2023-11-19 07:45:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2023-11-19 07:45:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-19 07:45:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-19 07:45:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 07:45:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 07:45:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2023-11-19 07:45:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2023-11-19 07:45:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:45:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 07:45:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 07:45:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-19 07:45:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-19 07:45:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:32,054 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:32,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:32,421 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 07:45:33,781 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-19 07:45:56,239 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:56,262 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:56,263 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:45:56,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:56 BoogieIcfgContainer [2023-11-19 07:45:56,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:56,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:56,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:56,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:56,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:28" (1/3) ... [2023-11-19 07:45:56,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6965f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:56, skipping insertion in model container [2023-11-19 07:45:56,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (2/3) ... [2023-11-19 07:45:56,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6965f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:56, skipping insertion in model container [2023-11-19 07:45:56,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:56" (3/3) ... [2023-11-19 07:45:56,293 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2023-11-19 07:45:56,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:56,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:45:56,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:56,418 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;@40ba70bf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:56,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:45:56,429 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) [2023-11-19 07:45:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:45:56,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:56,441 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] [2023-11-19 07:45:56,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:56,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash -8126071, now seen corresponding path program 1 times [2023-11-19 07:45:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:56,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464933894] [2023-11-19 07:45:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:45:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:58,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:58,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464933894] [2023-11-19 07:45:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464933894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:58,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:58,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:45:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848777072] [2023-11-19 07:45:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:58,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:58,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:58,063 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) [2023-11-19 07:46:00,156 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 [] [2023-11-19 07:46:02,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:46:04,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:46:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:09,017 INFO L93 Difference]: Finished difference Result 3091 states and 4545 transitions. [2023-11-19 07:46:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:46:09,020 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 [2023-11-19 07:46:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:09,071 INFO L225 Difference]: With dead ends: 3091 [2023-11-19 07:46:09,072 INFO L226 Difference]: Without dead ends: 2143 [2023-11-19 07:46:09,099 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 [2023-11-19 07:46:09,103 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2477 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 1248 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1248 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:09,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2606 Valid, 3260 Invalid, 2403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1248 Valid, 1152 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2023-11-19 07:46:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-11-19 07:46:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1802. [2023-11-19 07:46:09,315 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) [2023-11-19 07:46:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2536 transitions. [2023-11-19 07:46:09,336 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2536 transitions. Word has length 28 [2023-11-19 07:46:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2536 transitions. [2023-11-19 07:46:09,338 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) [2023-11-19 07:46:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2536 transitions. [2023-11-19 07:46:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:46:09,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:09,342 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] [2023-11-19 07:46:09,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:09,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:09,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1090804091, now seen corresponding path program 1 times [2023-11-19 07:46:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:09,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881967842] [2023-11-19 07:46:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:46:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:46:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:46:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:46:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881967842] [2023-11-19 07:46:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881967842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:10,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069817893] [2023-11-19 07:46:10,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:10,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:10,988 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) [2023-11-19 07:46:13,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:46:15,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []