./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx --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 d6a36286e10ea43dd9b822762f3f2df49a2903c1188868a0fefb608a216bfe78 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:22,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:22,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:24:22,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:22,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:22,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:22,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:22,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:22,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:24:22,510 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:24:22,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:22,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:22,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:22,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:22,515 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:22,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:22,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:24:22,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:22,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:22,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:24:22,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:22,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:24:22,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:24:22,519 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:22,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:22,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:22,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:22,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:22,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:22,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:22,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:22,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:24:22,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:24:22,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:24:22,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:22,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:22,525 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:24:22,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:22,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:22,525 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_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a36286e10ea43dd9b822762f3f2df49a2903c1188868a0fefb608a216bfe78 [2023-11-21 22:24:22,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:22,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:22,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:22,854 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:22,855 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:22,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i [2023-11-21 22:24:26,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:26,815 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:26,815 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i [2023-11-21 22:24:26,863 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/data/17f6292da/fe39aecc56e4477f95a26e81abbf3a47/FLAGe0c12ea6d [2023-11-21 22:24:26,882 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/data/17f6292da/fe39aecc56e4477f95a26e81abbf3a47 [2023-11-21 22:24:26,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:26,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:26,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:26,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:26,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:26,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:26" (1/1) ... [2023-11-21 22:24:26,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2326088e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:26, skipping insertion in model container [2023-11-21 22:24:26,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:26" (1/1) ... [2023-11-21 22:24:27,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:27,659 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3846] [2023-11-21 22:24:27,660 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3847-3848] [2023-11-21 22:24:27,911 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_26cd49fe-77eb-4211-8f4c-9f9bc527563b/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i[114996,115009] [2023-11-21 22:24:28,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:28,758 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:24:28,939 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3846] [2023-11-21 22:24:28,939 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3847-3848] [2023-11-21 22:24:28,955 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_26cd49fe-77eb-4211-8f4c-9f9bc527563b/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i[114996,115009] [2023-11-21 22:24:29,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:29,238 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:24:29,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29 WrapperNode [2023-11-21 22:24:29,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:29,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:29,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:24:29,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:24:29,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:29,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:29,585 INFO L138 Inliner]: procedures = 157, calls = 2028, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 3485 [2023-11-21 22:24:29,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:29,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:24:29,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:24:29,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:24:29,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:29,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:29,630 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,004 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 22:24:30,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:24:30,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:24:30,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:24:30,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:24:30,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (1/1) ... [2023-11-21 22:24:30,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:30,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:30,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:24:30,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cd49fe-77eb-4211-8f4c-9f9bc527563b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:24:30,258 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-21 22:24:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-21 22:24:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 22:24:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-21 22:24:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-21 22:24:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_tiocmget [2023-11-21 22:24:30,261 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_tiocmget [2023-11-21 22:24:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2023-11-21 22:24:30,262 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2023-11-21 22:24:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 22:24:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 22:24:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 22:24:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 22:24:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-21 22:24:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-21 22:24:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:24:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_calc_interface [2023-11-21 22:24:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_calc_interface [2023-11-21 22:24:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-21 22:24:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-21 22:24:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_resume [2023-11-21 22:24:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_resume [2023-11-21 22:24:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-21 22:24:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-21 22:24:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-21 22:24:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-21 22:24:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:24:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:24:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_close [2023-11-21 22:24:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_close [2023-11-21 22:24:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-21 22:24:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-21 22:24:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-21 22:24:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-21 22:24:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_write [2023-11-21 22:24:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_write [2023-11-21 22:24:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_submit_rx_urbs [2023-11-21 22:24:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_submit_rx_urbs [2023-11-21 22:24:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_port_probe [2023-11-21 22:24:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_port_probe [2023-11-21 22:24:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_send_setup [2023-11-21 22:24:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_send_setup [2023-11-21 22:24:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-21 22:24:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-21 22:24:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 22:24:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 22:24:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-21 22:24:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-21 22:24:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-21 22:24:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-21 22:24:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:24:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-21 22:24:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-21 22:24:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 22:24:30,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 22:24:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-21 22:24:30,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-21 22:24:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-21 22:24:30,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-21 22:24:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 22:24:30,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 22:24:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:24:30,275 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:24:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2023-11-21 22:24:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2023-11-21 22:24:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:24:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:24:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-21 22:24:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-21 22:24:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:24:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-21 22:24:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-21 22:24:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 22:24:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 22:24:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:24:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:24:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:24:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_dtr_rts [2023-11-21 22:24:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_dtr_rts [2023-11-21 22:24:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-21 22:24:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-21 22:24:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:24:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-21 22:24:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-21 22:24:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_chars_in_buffer [2023-11-21 22:24:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_chars_in_buffer [2023-11-21 22:24:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-21 22:24:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-21 22:24:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-21 22:24:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-21 22:24:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 22:24:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 22:24:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-21 22:24:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-21 22:24:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_write_room [2023-11-21 22:24:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_write_room [2023-11-21 22:24:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:24:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:24:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_instat_callback [2023-11-21 22:24:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_instat_callback [2023-11-21 22:24:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_stop_rx_urbs [2023-11-21 22:24:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_stop_rx_urbs [2023-11-21 22:24:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 22:24:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 22:24:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-21 22:24:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-21 22:24:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 22:24:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 22:24:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_port_remove [2023-11-21 22:24:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_port_remove [2023-11-21 22:24:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 22:24:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 22:24:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_calc_num_ports [2023-11-21 22:24:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_calc_num_ports [2023-11-21 22:24:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-21 22:24:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-21 22:24:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_tiocmset [2023-11-21 22:24:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_tiocmset [2023-11-21 22:24:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_release_urb [2023-11-21 22:24:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_release_urb [2023-11-21 22:24:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 22:24:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 22:24:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:24:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_open [2023-11-21 22:24:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_open [2023-11-21 22:24:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-21 22:24:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-21 22:24:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2023-11-21 22:24:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2023-11-21 22:24:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-21 22:24:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-21 22:24:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_suspend [2023-11-21 22:24:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_suspend [2023-11-21 22:24:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 22:24:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-21 22:24:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-21 22:24:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:24:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:24:30,771 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:24:30,777 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:24:31,107 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 22:24:34,939 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:24:36,021 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:24:36,021 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:24:36,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:36 BoogieIcfgContainer [2023-11-21 22:24:36,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:24:36,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:24:36,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:24:36,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:24:36,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:24:26" (1/3) ... [2023-11-21 22:24:36,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d84ceab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:36, skipping insertion in model container [2023-11-21 22:24:36,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:29" (2/3) ... [2023-11-21 22:24:36,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d84ceab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:36, skipping insertion in model container [2023-11-21 22:24:36,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:36" (3/3) ... [2023-11-21 22:24:36,040 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i [2023-11-21 22:24:36,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:24:36,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:24:36,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:24:36,161 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;@7c67d1d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:24:36,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:24:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 513 states have (on average 1.3352826510721247) internal successors, (685), 526 states have internal predecessors, (685), 259 states have call successors, (259), 61 states have call predecessors, (259), 60 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) [2023-11-21 22:24:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 22:24:36,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:36,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:36,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:36,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 642712879, now seen corresponding path program 1 times [2023-11-21 22:24:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:36,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294699397] [2023-11-21 22:24:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:24:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:24:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:24:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:24:37,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:37,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294699397] [2023-11-21 22:24:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294699397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:24:37,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733754305] [2023-11-21 22:24:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:37,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:37,219 INFO L87 Difference]: Start difference. First operand has 834 states, 513 states have (on average 1.3352826510721247) internal successors, (685), 526 states have internal predecessors, (685), 259 states have call successors, (259), 61 states have call predecessors, (259), 60 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:24:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:42,628 INFO L93 Difference]: Finished difference Result 1776 states and 2613 transitions. [2023-11-21 22:24:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:24:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-11-21 22:24:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:42,660 INFO L225 Difference]: With dead ends: 1776 [2023-11-21 22:24:42,661 INFO L226 Difference]: Without dead ends: 940 [2023-11-21 22:24:42,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:24:42,682 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 392 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:42,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2381 Invalid, 2221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [659 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-21 22:24:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-11-21 22:24:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 853. [2023-11-21 22:24:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 533 states have (on average 1.3283302063789868) internal successors, (708), 541 states have internal predecessors, (708), 257 states have call successors, (257), 63 states have call predecessors, (257), 62 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) [2023-11-21 22:24:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1221 transitions. [2023-11-21 22:24:42,867 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1221 transitions. Word has length 40 [2023-11-21 22:24:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:42,868 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1221 transitions. [2023-11-21 22:24:42,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:24:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1221 transitions. [2023-11-21 22:24:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-21 22:24:42,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:42,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:24:42,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:42,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash 931483586, now seen corresponding path program 1 times [2023-11-21 22:24:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:42,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595208597] [2023-11-21 22:24:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:24:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:24:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:24:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:24:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:24:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:24:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 22:24:43,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595208597] [2023-11-21 22:24:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595208597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:43,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:24:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844451454] [2023-11-21 22:24:43,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:43,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:43,652 INFO L87 Difference]: Start difference. First operand 853 states and 1221 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:24:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:49,960 INFO L93 Difference]: Finished difference Result 2038 states and 2948 transitions. [2023-11-21 22:24:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:24:49,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2023-11-21 22:24:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:49,982 INFO L225 Difference]: With dead ends: 2038 [2023-11-21 22:24:49,984 INFO L226 Difference]: Without dead ends: 1205 [2023-11-21 22:24:49,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:24:49,996 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 718 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:49,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 2234 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-21 22:24:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-11-21 22:24:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1108. [2023-11-21 22:24:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 722 states have (on average 1.296398891966759) internal successors, (936), 730 states have internal predecessors, (936), 295 states have call successors, (295), 91 states have call predecessors, (295), 90 states have return successors, (294), 292 states have call predecessors, (294), 294 states have call successors, (294) [2023-11-21 22:24:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1525 transitions. [2023-11-21 22:24:50,125 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1525 transitions. Word has length 67 [2023-11-21 22:24:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:50,127 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1525 transitions. [2023-11-21 22:24:50,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:24:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1525 transitions. [2023-11-21 22:24:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 22:24:50,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:50,140 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:50,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:24:50,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:50,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash -616910178, now seen corresponding path program 1 times [2023-11-21 22:24:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896393040] [2023-11-21 22:24:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:24:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:24:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:24:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:24:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:24:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:24:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-21 22:24:51,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896393040] [2023-11-21 22:24:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896393040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:51,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:51,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:24:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9583425] [2023-11-21 22:24:51,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:51,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:24:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:51,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:24:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:24:51,277 INFO L87 Difference]: Start difference. First operand 1108 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 22:24:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:57,082 INFO L93 Difference]: Finished difference Result 1301 states and 1799 transitions. [2023-11-21 22:24:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:24:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2023-11-21 22:24:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:57,095 INFO L225 Difference]: With dead ends: 1301 [2023-11-21 22:24:57,096 INFO L226 Difference]: Without dead ends: 1298 [2023-11-21 22:24:57,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:24:57,099 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1250 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:57,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2735 Invalid, 2453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-21 22:24:57,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-21 22:24:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1192. [2023-11-21 22:24:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 771 states have (on average 1.2892347600518808) internal successors, (994), 780 states have internal predecessors, (994), 315 states have call successors, (315), 106 states have call predecessors, (315), 105 states have return successors, (314), 311 states have call predecessors, (314), 314 states have call successors, (314) [2023-11-21 22:24:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1623 transitions. [2023-11-21 22:24:57,202 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1623 transitions. Word has length 69 [2023-11-21 22:24:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:57,206 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1623 transitions. [2023-11-21 22:24:57,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 22:24:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1623 transitions. [2023-11-21 22:24:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-21 22:24:57,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:57,249 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:57,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:24:57,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:57,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2038267177, now seen corresponding path program 1 times [2023-11-21 22:24:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105878346] [2023-11-21 22:24:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:24:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:24:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:24:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:24:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:24:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:24:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:24:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:24:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-21 22:24:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:24:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-21 22:24:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-21 22:24:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-21 22:24:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-21 22:24:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-21 22:24:58,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:58,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105878346] [2023-11-21 22:24:58,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105878346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:58,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:58,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:24:58,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015555512] [2023-11-21 22:24:58,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:24:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:24:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:24:58,451 INFO L87 Difference]: Start difference. First operand 1192 states and 1623 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)