./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:24,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:24,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 23:06:24,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:24,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:24,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:24,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:24,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:24,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:24,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:24,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:24,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:24,996 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:24,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:24,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:06:24,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:24,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:24,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:06:25,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:25,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:06:25,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:25,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:25,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:25,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:25,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:25,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:25,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:25,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:25,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:06:25,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:25,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:06:25,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:25,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:06:25,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:25,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:25,008 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:25,009 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_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2023-11-06 23:06:25,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:25,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:25,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:25,450 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:25,451 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:25,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-06 23:06:28,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:29,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:29,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-06 23:06:29,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/data/aa0a716c4/6254587835f44184ab1a7f2831cd7141/FLAGd6e23507a [2023-11-06 23:06:29,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/data/aa0a716c4/6254587835f44184ab1a7f2831cd7141 [2023-11-06 23:06:29,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:29,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:29,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:29,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:29,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:29,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:29" (1/1) ... [2023-11-06 23:06:29,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1533f832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:29, skipping insertion in model container [2023-11-06 23:06:29,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:29" (1/1) ... [2023-11-06 23:06:29,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:30,310 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_ab026fb6-4767-44eb-834d-6fc9b6c77057/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-11-06 23:06:30,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:30,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:31,111 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [2776-2777] [2023-11-06 23:06:31,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2811] [2023-11-06 23:06:31,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2814] [2023-11-06 23:06:31,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2817] [2023-11-06 23:06:31,116 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2820] [2023-11-06 23:06:31,145 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_ab026fb6-4767-44eb-834d-6fc9b6c77057/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-11-06 23:06:31,239 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3893] [2023-11-06 23:06:31,241 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3915] [2023-11-06 23:06:31,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:31,445 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:06:31,446 WARN L672 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:06:31,446 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:06:31,454 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:31,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31 WrapperNode [2023-11-06 23:06:31,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:31,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:31,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:31,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:31,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,771 INFO L138 Inliner]: procedures = 203, calls = 1322, calls flagged for inlining = 90, calls inlined = 90, statements flattened = 3777 [2023-11-06 23:06:31,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:31,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:31,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:31,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:31,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:32,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:32,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:32,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:32,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:32,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:32,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:32,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:32,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:32,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:32,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:32,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:32,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:32,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab026fb6-4767-44eb-834d-6fc9b6c77057/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-06 23:06:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-06 23:06:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-06 23:06:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-06 23:06:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 23:06:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 23:06:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-06 23:06:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-06 23:06:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-06 23:06:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-06 23:06:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-06 23:06:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-06 23:06:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-06 23:06:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-06 23:06:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-06 23:06:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-06 23:06:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 23:06:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 23:06:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-06 23:06:32,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-06 23:06:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-06 23:06:32,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-06 23:06:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-06 23:06:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-06 23:06:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-06 23:06:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-06 23:06:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 23:06:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 23:06:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 23:06:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 23:06:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-06 23:06:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-06 23:06:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:06:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:06:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-06 23:06:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-06 23:06:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-06 23:06:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-06 23:06:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-06 23:06:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-06 23:06:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:06:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-06 23:06:32,210 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-06 23:06:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:06:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-06 23:06:32,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-06 23:06:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-06 23:06:32,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-06 23:06:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-06 23:06:32,211 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-06 23:06:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-06 23:06:32,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-06 23:06:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-06 23:06:32,211 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-06 23:06:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 23:06:32,212 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 23:06:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:06:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 23:06:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-06 23:06:32,213 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-06 23:06:32,214 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-06 23:06:32,214 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-06 23:06:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 23:06:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 23:06:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 23:06:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 23:06:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-06 23:06:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-06 23:06:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-06 23:06:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-06 23:06:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 23:06:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 23:06:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-06 23:06:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-06 23:06:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-06 23:06:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-06 23:06:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-06 23:06:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-06 23:06:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-06 23:06:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-06 23:06:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 23:06:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-06 23:06:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-06 23:06:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-06 23:06:32,219 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-06 23:06:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-06 23:06:32,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-06 23:06:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-06 23:06:32,220 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-06 23:06:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 23:06:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:06:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-06 23:06:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-06 23:06:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 23:06:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 23:06:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-06 23:06:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-06 23:06:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-06 23:06:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-06 23:06:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:06:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-06 23:06:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-06 23:06:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-06 23:06:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-06 23:06:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-06 23:06:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-06 23:06:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 23:06:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 23:06:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-11-06 23:06:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-11-06 23:06:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:06:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-06 23:06:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-06 23:06:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-06 23:06:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-06 23:06:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-06 23:06:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-06 23:06:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-06 23:06:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-06 23:06:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:06:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 23:06:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-06 23:06:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-06 23:06:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-06 23:06:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-06 23:06:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-06 23:06:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-06 23:06:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-06 23:06:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-06 23:06:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-06 23:06:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-06 23:06:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-06 23:06:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-06 23:06:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-06 23:06:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-06 23:06:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-06 23:06:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-06 23:06:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-06 23:06:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-06 23:06:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-06 23:06:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-06 23:06:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 23:06:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 23:06:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-06 23:06:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-06 23:06:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-06 23:06:32,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-06 23:06:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-06 23:06:32,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-06 23:06:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:06:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-06 23:06:32,240 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-06 23:06:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:32,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 23:06:32,246 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 23:06:32,828 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:32,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:33,036 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-06 23:06:52,331 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:52,355 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:52,355 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:06:52,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:52 BoogieIcfgContainer [2023-11-06 23:06:52,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:52,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:06:52,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:06:52,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:06:52,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:29" (1/3) ... [2023-11-06 23:06:52,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b800700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:52, skipping insertion in model container [2023-11-06 23:06:52,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (2/3) ... [2023-11-06 23:06:52,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b800700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:52, skipping insertion in model container [2023-11-06 23:06:52,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:52" (3/3) ... [2023-11-06 23:06:52,372 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-06 23:06:52,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:06:52,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:06:52,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:06:52,488 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=LoopsAndPotentialCycles, 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;@42dd5e8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:06:52,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:06:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 1414 states, 980 states have (on average 1.3918367346938776) internal successors, (1364), 1023 states have internal predecessors, (1364), 364 states have call successors, (364), 69 states have call predecessors, (364), 68 states have return successors, (360), 357 states have call predecessors, (360), 360 states have call successors, (360) [2023-11-06 23:06:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 23:06:52,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:52,516 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:52,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:52,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -881881672, now seen corresponding path program 1 times [2023-11-06 23:06:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928518216] [2023-11-06 23:06:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:06:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:06:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:06:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:06:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:06:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:06:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:06:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:06:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928518216] [2023-11-06 23:06:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928518216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:06:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528872407] [2023-11-06 23:06:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:06:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:06:55,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:55,044 INFO L87 Difference]: Start difference. First operand has 1414 states, 980 states have (on average 1.3918367346938776) internal successors, (1364), 1023 states have internal predecessors, (1364), 364 states have call successors, (364), 69 states have call predecessors, (364), 68 states have return successors, (360), 357 states have call predecessors, (360), 360 states have call successors, (360) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:06:57,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:59,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:11,655 INFO L93 Difference]: Finished difference Result 4850 states and 7456 transitions. [2023-11-06 23:07:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2023-11-06 23:07:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:11,714 INFO L225 Difference]: With dead ends: 4850 [2023-11-06 23:07:11,714 INFO L226 Difference]: Without dead ends: 3422 [2023-11-06 23:07:11,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:11,741 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 3703 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 1275 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:11,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 4227 Invalid, 3586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1275 Valid, 2309 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2023-11-06 23:07:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2023-11-06 23:07:12,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 2598. [2023-11-06 23:07:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 1789 states have (on average 1.3627724986025713) internal successors, (2438), 1850 states have internal predecessors, (2438), 681 states have call successors, (681), 129 states have call predecessors, (681), 127 states have return successors, (669), 660 states have call predecessors, (669), 669 states have call successors, (669) [2023-11-06 23:07:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3788 transitions. [2023-11-06 23:07:12,060 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3788 transitions. Word has length 56 [2023-11-06 23:07:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:12,061 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 3788 transitions. [2023-11-06 23:07:12,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3788 transitions. [2023-11-06 23:07:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 23:07:12,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:12,066 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:12,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:12,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:12,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1569604175, now seen corresponding path program 1 times [2023-11-06 23:07:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:12,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821264349] [2023-11-06 23:07:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:12,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:07:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:07:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:07:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:07:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:07:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:07:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:07:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:07:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821264349] [2023-11-06 23:07:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821264349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:13,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839790623] [2023-11-06 23:07:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:13,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:13,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:13,924 INFO L87 Difference]: Start difference. First operand 2598 states and 3788 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:15,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:18,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:28,576 INFO L93 Difference]: Finished difference Result 9370 states and 14042 transitions. [2023-11-06 23:07:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2023-11-06 23:07:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:28,662 INFO L225 Difference]: With dead ends: 9370 [2023-11-06 23:07:28,663 INFO L226 Difference]: Without dead ends: 6787 [2023-11-06 23:07:28,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:28,683 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 4397 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 2008 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2008 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:28,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4767 Valid, 4252 Invalid, 4056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2008 Valid, 2046 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2023-11-06 23:07:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6787 states. [2023-11-06 23:07:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6787 to 5139. [2023-11-06 23:07:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 3548 states have (on average 1.3641488162344984) internal successors, (4840), 3661 states have internal predecessors, (4840), 1339 states have call successors, (1339), 255 states have call predecessors, (1339), 251 states have return successors, (1321), 1306 states have call predecessors, (1321), 1321 states have call successors, (1321) [2023-11-06 23:07:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 7500 transitions. [2023-11-06 23:07:29,098 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 7500 transitions. Word has length 57 [2023-11-06 23:07:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:29,099 INFO L495 AbstractCegarLoop]: Abstraction has 5139 states and 7500 transitions. [2023-11-06 23:07:29,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:07:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 7500 transitions. [2023-11-06 23:07:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-06 23:07:29,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:29,107 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:29,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:29,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:29,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,108 INFO L85 PathProgramCache]: Analyzing trace with hash 708306869, now seen corresponding path program 1 times [2023-11-06 23:07:29,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092859171] [2023-11-06 23:07:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:07:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:07:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:07:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:07:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:07:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:07:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:07:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:07:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:07:30,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092859171] [2023-11-06 23:07:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092859171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:30,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336786914] [2023-11-06 23:07:30,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:30,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:30,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:30,846 INFO L87 Difference]: Start difference. First operand 5139 states and 7500 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:32,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:34,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:43,719 INFO L93 Difference]: Finished difference Result 16737 states and 24743 transitions. [2023-11-06 23:07:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2023-11-06 23:07:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:43,834 INFO L225 Difference]: With dead ends: 16737 [2023-11-06 23:07:43,835 INFO L226 Difference]: Without dead ends: 11613 [2023-11-06 23:07:43,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:43,867 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 2449 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 879 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2763 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:43,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2763 Valid, 3693 Invalid, 2588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [879 Valid, 1707 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2023-11-06 23:07:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11613 states. [2023-11-06 23:07:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11613 to 9997. [2023-11-06 23:07:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9997 states, 6899 states have (on average 1.3662849688360632) internal successors, (9426), 7107 states have internal predecessors, (9426), 2599 states have call successors, (2599), 503 states have call predecessors, (2599), 498 states have return successors, (2581), 2554 states have call predecessors, (2581), 2581 states have call successors, (2581) [2023-11-06 23:07:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9997 states to 9997 states and 14606 transitions. [2023-11-06 23:07:44,835 INFO L78 Accepts]: Start accepts. Automaton has 9997 states and 14606 transitions. Word has length 59 [2023-11-06 23:07:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:44,836 INFO L495 AbstractCegarLoop]: Abstraction has 9997 states and 14606 transitions. [2023-11-06 23:07:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9997 states and 14606 transitions. [2023-11-06 23:07:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 23:07:44,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:44,845 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:44,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:07:44,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:44,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1448156281, now seen corresponding path program 1 times [2023-11-06 23:07:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593247957] [2023-11-06 23:07:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:44,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:07:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:07:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:07:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:07:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:07:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:07:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:07:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 23:07:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:07:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:07:46,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:46,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593247957] [2023-11-06 23:07:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593247957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:46,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:46,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3752180] [2023-11-06 23:07:46,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:46,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:46,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:46,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:46,364 INFO L87 Difference]: Start difference. First operand 9997 states and 14606 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:07:48,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:50,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:02,329 INFO L93 Difference]: Finished difference Result 36502 states and 54756 transitions. [2023-11-06 23:08:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-11-06 23:08:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:02,550 INFO L225 Difference]: With dead ends: 36502 [2023-11-06 23:08:02,550 INFO L226 Difference]: Without dead ends: 26517 [2023-11-06 23:08:02,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:02,621 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 3377 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 1099 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3745 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:02,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3745 Valid, 5170 Invalid, 3563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1099 Valid, 2462 Invalid, 2 Unknown, 0 Unchecked, 14.5s Time] [2023-11-06 23:08:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26517 states. [2023-11-06 23:08:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26517 to 19914. [2023-11-06 23:08:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19914 states, 13756 states have (on average 1.366821750508869) internal successors, (18802), 14162 states have internal predecessors, (18802), 5167 states have call successors, (5167), 998 states have call predecessors, (5167), 990 states have return successors, (5147), 5089 states have call predecessors, (5147), 5147 states have call successors, (5147) [2023-11-06 23:08:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19914 states to 19914 states and 29116 transitions. [2023-11-06 23:08:04,330 INFO L78 Accepts]: Start accepts. Automaton has 19914 states and 29116 transitions. Word has length 80 [2023-11-06 23:08:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:04,332 INFO L495 AbstractCegarLoop]: Abstraction has 19914 states and 29116 transitions. [2023-11-06 23:08:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:08:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19914 states and 29116 transitions. [2023-11-06 23:08:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 23:08:04,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:04,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:08:04,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:04,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 622014301, now seen corresponding path program 1 times [2023-11-06 23:08:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:04,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123441418] [2023-11-06 23:08:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:04,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:08:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:08:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:08:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:08:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:08:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 23:08:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 23:08:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:08:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:08,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123441418] [2023-11-06 23:08:08,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123441418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:08,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:08,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 23:08:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145588954] [2023-11-06 23:08:08,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:08,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 23:08:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 23:08:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:08:08,514 INFO L87 Difference]: Start difference. First operand 19914 states and 29116 transitions. Second operand has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 23:08:10,572 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 [] [2023-11-06 23:08:12,654 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 [] [2023-11-06 23:08:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:44,051 INFO L93 Difference]: Finished difference Result 66354 states and 99517 transitions. [2023-11-06 23:08:44,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 23:08:44,052 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 82 [2023-11-06 23:08:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:44,351 INFO L225 Difference]: With dead ends: 66354 [2023-11-06 23:08:44,351 INFO L226 Difference]: Without dead ends: 46455 [2023-11-06 23:08:44,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 23:08:44,439 INFO L413 NwaCegarLoop]: 1782 mSDtfsCounter, 4604 mSDsluCounter, 18755 mSDsCounter, 0 mSdLazyCounter, 10304 mSolverCounterSat, 2259 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4975 SdHoareTripleChecker+Valid, 20537 SdHoareTripleChecker+Invalid, 12565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2259 IncrementalHoareTripleChecker+Valid, 10304 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:44,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4975 Valid, 20537 Invalid, 12565 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2259 Valid, 10304 Invalid, 2 Unknown, 0 Unchecked, 31.5s Time] [2023-11-06 23:08:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46455 states. [2023-11-06 23:08:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46455 to 34648. [2023-11-06 23:08:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34648 states, 23925 states have (on average 1.367523510971787) internal successors, (32718), 24638 states have internal predecessors, (32718), 8988 states have call successors, (8988), 1730 states have call predecessors, (8988), 1734 states have return successors, (9024), 8867 states have call predecessors, (9024), 8968 states have call successors, (9024) [2023-11-06 23:08:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34648 states to 34648 states and 50730 transitions. [2023-11-06 23:08:47,707 INFO L78 Accepts]: Start accepts. Automaton has 34648 states and 50730 transitions. Word has length 82 [2023-11-06 23:08:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:47,708 INFO L495 AbstractCegarLoop]: Abstraction has 34648 states and 50730 transitions. [2023-11-06 23:08:47,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 23:08:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 34648 states and 50730 transitions. [2023-11-06 23:08:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-06 23:08:47,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:47,721 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:47,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:08:47,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:47,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:47,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1408307185, now seen corresponding path program 1 times [2023-11-06 23:08:47,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:47,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579032695] [2023-11-06 23:08:47,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:47,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:08:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:08:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:08:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:08:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:08:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:08:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:08:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 23:08:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 23:08:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 23:08:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 23:08:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 23:08:49,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:49,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579032695] [2023-11-06 23:08:49,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579032695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:49,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:49,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:08:49,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255369587] [2023-11-06 23:08:49,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:49,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:49,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:49,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:49,586 INFO L87 Difference]: Start difference. First operand 34648 states and 50730 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 23:08:51,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:53,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:55,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:10,749 INFO L93 Difference]: Finished difference Result 80740 states and 120617 transitions. [2023-11-06 23:09:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2023-11-06 23:09:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:11,069 INFO L225 Difference]: With dead ends: 80740 [2023-11-06 23:09:11,069 INFO L226 Difference]: Without dead ends: 46107 [2023-11-06 23:09:11,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:11,182 INFO L413 NwaCegarLoop]: 3124 mSDtfsCounter, 2604 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 3659 mSolverCounterSat, 712 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 7882 SdHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 3659 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:11,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2962 Valid, 7882 Invalid, 4374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [712 Valid, 3659 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2023-11-06 23:09:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46107 states. [2023-11-06 23:09:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46107 to 34629. [2023-11-06 23:09:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34629 states, 23906 states have (on average 1.3671463230988037) internal successors, (32683), 24621 states have internal predecessors, (32683), 8988 states have call successors, (8988), 1730 states have call predecessors, (8988), 1734 states have return successors, (9024), 8865 states have call predecessors, (9024), 8968 states have call successors, (9024) [2023-11-06 23:09:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34629 states to 34629 states and 50695 transitions. [2023-11-06 23:09:14,252 INFO L78 Accepts]: Start accepts. Automaton has 34629 states and 50695 transitions. Word has length 97 [2023-11-06 23:09:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:14,253 INFO L495 AbstractCegarLoop]: Abstraction has 34629 states and 50695 transitions. [2023-11-06 23:09:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 23:09:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 34629 states and 50695 transitions. [2023-11-06 23:09:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 23:09:14,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:14,261 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:09:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:09:14,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:14,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash -367319646, now seen corresponding path program 1 times [2023-11-06 23:09:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078812182] [2023-11-06 23:09:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:09:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:09:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:09:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:09:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:09:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:09:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:09:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:09:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 23:09:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:09:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 23:09:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078812182] [2023-11-06 23:09:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078812182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:20,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:20,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-06 23:09:20,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527340601] [2023-11-06 23:09:20,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:20,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:09:20,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:09:20,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:09:20,480 INFO L87 Difference]: Start difference. First operand 34629 states and 50695 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 12 states have internal predecessors, (56), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-06 23:09:22,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:24,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []