./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fba957c5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-fba957c-m [2023-11-23 10:21:48,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 10:21:48,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 10:21:48,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 10:21:48,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 10:21:48,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 10:21:48,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 10:21:48,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 10:21:48,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 10:21:48,571 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 10:21:48,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 10:21:48,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 10:21:48,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 10:21:48,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 10:21:48,573 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 10:21:48,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 10:21:48,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 10:21:48,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 10:21:48,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 10:21:48,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 10:21:48,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 10:21:48,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 10:21:48,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 10:21:48,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 10:21:48,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 10:21:48,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 10:21:48,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 10:21:48,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 10:21:48,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 10:21:48,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 10:21:48,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 10:21:48,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 10:21:48,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 10:21:48,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 10:21:48,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 10:21:48,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 10:21:48,581 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 10:21:48,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 10:21:48,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 10:21:48,582 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 10:21:48,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 10:21:48,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 10:21:48,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 10:21:48,874 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 10:21:48,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 10:21:48,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-23 10:21:50,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 10:21:50,418 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 10:21:50,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-23 10:21:50,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1ef895d/fd17eecceb7d47de88df2d26a438dff7/FLAG9cbb4cbfc [2023-11-23 10:21:50,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1ef895d/fd17eecceb7d47de88df2d26a438dff7 [2023-11-23 10:21:50,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 10:21:50,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 10:21:50,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 10:21:50,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 10:21:50,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 10:21:50,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:21:50" (1/1) ... [2023-11-23 10:21:50,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b44a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:50, skipping insertion in model container [2023-11-23 10:21:50,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:21:50" (1/1) ... [2023-11-23 10:21:50,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 10:21:51,007 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-11-23 10:21:51,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 10:21:51,434 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 10:21:51,482 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] [2023-11-23 10:21:51,484 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2811] [2023-11-23 10:21:51,485 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2814] [2023-11-23 10:21:51,485 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2817] [2023-11-23 10:21:51,485 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2820] [2023-11-23 10:21:51,501 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-11-23 10:21:51,523 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3893] [2023-11-23 10:21:51,524 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3915] [2023-11-23 10:21:51,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 10:21:51,642 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 10:21:51,643 WARN L675 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 10:21:51,643 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 10:21:51,649 INFO L206 MainTranslator]: Completed translation [2023-11-23 10:21:51,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51 WrapperNode [2023-11-23 10:21:51,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 10:21:51,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 10:21:51,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 10:21:51,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 10:21:51,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,822 INFO L138 Inliner]: procedures = 203, calls = 1322, calls flagged for inlining = 90, calls inlined = 90, statements flattened = 3777 [2023-11-23 10:21:51,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 10:21:51,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 10:21:51,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 10:21:51,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 10:21:51,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:51,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:52,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:52,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:52,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 10:21:52,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 10:21:52,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 10:21:52,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 10:21:52,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (1/1) ... [2023-11-23 10:21:52,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 10:21:52,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 10:21:52,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 10:21:52,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 10:21:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-23 10:21:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-23 10:21:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-23 10:21:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-23 10:21:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 10:21:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 10:21:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 10:21:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 10:21:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-23 10:21:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-23 10:21:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-23 10:21:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-23 10:21:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-23 10:21:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-23 10:21:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 10:21:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 10:21:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 10:21:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 10:21:52,194 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-23 10:21:52,195 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-23 10:21:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-23 10:21:52,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-23 10:21:52,195 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-23 10:21:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-23 10:21:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-23 10:21:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-23 10:21:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 10:21:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 10:21:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 10:21:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 10:21:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-23 10:21:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-23 10:21:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 10:21:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 10:21:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 10:21:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 10:21:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-23 10:21:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-23 10:21:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-23 10:21:52,198 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-23 10:21:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 10:21:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 10:21:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 10:21:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 10:21:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-23 10:21:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-23 10:21:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-23 10:21:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-23 10:21:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 10:21:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 10:21:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 10:21:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 10:21:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-23 10:21:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-23 10:21:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 10:21:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 10:21:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 10:21:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 10:21:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-23 10:21:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-23 10:21:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 10:21:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 10:21:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 10:21:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 10:21:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 10:21:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 10:21:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 10:21:52,209 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 10:21:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-23 10:21:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-23 10:21:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 10:21:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 10:21:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 10:21:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 10:21:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-23 10:21:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-23 10:21:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 10:21:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 10:21:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 10:21:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 10:21:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 10:21:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 10:21:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 10:21:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 10:21:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 10:21:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-23 10:21:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-23 10:21:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 10:21:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 10:21:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 10:21:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 10:21:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-23 10:21:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-23 10:21:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 10:21:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 10:21:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-23 10:21:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-23 10:21:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-23 10:21:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-23 10:21:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 10:21:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-23 10:21:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-23 10:21:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-23 10:21:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-23 10:21:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-23 10:21:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-23 10:21:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 10:21:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 10:21:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-11-23 10:21:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-11-23 10:21:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 10:21:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-23 10:21:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-23 10:21:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-23 10:21:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-23 10:21:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-23 10:21:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-23 10:21:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 10:21:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 10:21:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 10:21:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 10:21:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 10:21:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-23 10:21:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-23 10:21:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-23 10:21:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-23 10:21:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-23 10:21:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-23 10:21:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 10:21:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 10:21:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-23 10:21:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-23 10:21:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-23 10:21:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-23 10:21:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-23 10:21:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-23 10:21:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 10:21:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 10:21:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-23 10:21:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-23 10:21:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-23 10:21:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-23 10:21:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 10:21:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 10:21:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-23 10:21:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-23 10:21:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 10:21:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 10:21:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-23 10:21:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-23 10:21:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 10:21:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-23 10:21:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-23 10:21:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 10:21:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 10:21:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 10:21:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 10:21:52,722 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 10:21:52,728 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 10:21:52,900 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 10:21:57,262 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 10:21:57,390 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 10:21:57,391 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 10:21:57,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:21:57 BoogieIcfgContainer [2023-11-23 10:21:57,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 10:21:57,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 10:21:57,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 10:21:57,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 10:21:57,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:21:50" (1/3) ... [2023-11-23 10:21:57,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a898741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:21:57, skipping insertion in model container [2023-11-23 10:21:57,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:21:51" (2/3) ... [2023-11-23 10:21:57,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a898741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:21:57, skipping insertion in model container [2023-11-23 10:21:57,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:21:57" (3/3) ... [2023-11-23 10:21:57,397 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-23 10:21:57,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 10:21:57,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 10:21:57,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 10:21:57,461 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7543b2c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 10:21:57,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 10:21:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 1273 states, 839 states have (on average 1.4576877234803338) internal successors, (1223), 882 states have internal predecessors, (1223), 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) [2023-11-23 10:21:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 10:21:57,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:21:57,498 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] [2023-11-23 10:21:57,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:21:57,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:21:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1693928541, now seen corresponding path program 1 times [2023-11-23 10:21:57,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:21:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756795674] [2023-11-23 10:21:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:21:57,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:21:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:21:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:21:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:21:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:21:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:21:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:21:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 10:21:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 10:21:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 10:21:58,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:21:58,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756795674] [2023-11-23 10:21:58,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756795674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:21:58,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:21:58,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 10:21:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239131101] [2023-11-23 10:21:58,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:21:58,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 10:21:58,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:21:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 10:21:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 10:21:58,952 INFO L87 Difference]: Start difference. First operand has 1273 states, 839 states have (on average 1.4576877234803338) internal successors, (1223), 882 states have internal predecessors, (1223), 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 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 10:22:01,014 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 [] [2023-11-23 10:22:03,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:05,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:22:12,488 INFO L93 Difference]: Finished difference Result 3974 states and 6239 transitions. [2023-11-23 10:22:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 10:22:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 54 [2023-11-23 10:22:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:22:12,517 INFO L225 Difference]: With dead ends: 3974 [2023-11-23 10:22:12,518 INFO L226 Difference]: Without dead ends: 2690 [2023-11-23 10:22:12,525 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 [2023-11-23 10:22:12,527 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 2254 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 934 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-11-23 10:22:12,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 3381 Invalid, 2698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [934 Valid, 1761 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2023-11-23 10:22:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2023-11-23 10:22:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2320. [2023-11-23 10:22:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 1520 states have (on average 1.4236842105263159) internal successors, (2164), 1580 states have internal predecessors, (2164), 670 states have call successors, (670), 130 states have call predecessors, (670), 129 states have return successors, (657), 651 states have call predecessors, (657), 657 states have call successors, (657) [2023-11-23 10:22:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3491 transitions. [2023-11-23 10:22:12,699 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3491 transitions. Word has length 54 [2023-11-23 10:22:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:22:12,700 INFO L495 AbstractCegarLoop]: Abstraction has 2320 states and 3491 transitions. [2023-11-23 10:22:12,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 10:22:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3491 transitions. [2023-11-23 10:22:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 10:22:12,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:22:12,707 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] [2023-11-23 10:22:12,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 10:22:12,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:22:12,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:22:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash -477623505, now seen corresponding path program 1 times [2023-11-23 10:22:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:22:12,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093464872] [2023-11-23 10:22:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:22:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:22:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:22:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:22:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:22:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:22:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:22:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:22:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:22:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 10:22:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:22:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093464872] [2023-11-23 10:22:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093464872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:22:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:22:13,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:22:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014425377] [2023-11-23 10:22:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:22:13,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:22:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:22:13,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:22:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:22:13,645 INFO L87 Difference]: Start difference. First operand 2320 states and 3491 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 10:22:15,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:17,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:19,749 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 [] [2023-11-23 10:22:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:22:29,818 INFO L93 Difference]: Finished difference Result 6092 states and 9530 transitions. [2023-11-23 10:22:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 10:22:29,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 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 54 [2023-11-23 10:22:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:22:29,853 INFO L225 Difference]: With dead ends: 6092 [2023-11-23 10:22:29,853 INFO L226 Difference]: Without dead ends: 6067 [2023-11-23 10:22:29,858 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 [2023-11-23 10:22:29,859 INFO L413 NwaCegarLoop]: 1433 mSDtfsCounter, 3314 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 1186 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-11-23 10:22:29,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3686 Valid, 4172 Invalid, 3665 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1186 Valid, 2476 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-11-23 10:22:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2023-11-23 10:22:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 4563. [2023-11-23 10:22:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 2999 states have (on average 1.422807602534178) internal successors, (4267), 3107 states have internal predecessors, (4267), 1311 states have call successors, (1311), 255 states have call predecessors, (1311), 252 states have return successors, (1299), 1284 states have call predecessors, (1299), 1299 states have call successors, (1299) [2023-11-23 10:22:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6877 transitions. [2023-11-23 10:22:30,103 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6877 transitions. Word has length 54 [2023-11-23 10:22:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:22:30,103 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 6877 transitions. [2023-11-23 10:22:30,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 10:22:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6877 transitions. [2023-11-23 10:22:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 10:22:30,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:22:30,105 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] [2023-11-23 10:22:30,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 10:22:30,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:22:30,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:22:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1922502886, now seen corresponding path program 1 times [2023-11-23 10:22:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:22:30,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735073727] [2023-11-23 10:22:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:22:30,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:22:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:22:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:22:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:22:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:22:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:22:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:22:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:22:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 10:22:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:22:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735073727] [2023-11-23 10:22:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735073727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:22:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:22:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:22:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439856555] [2023-11-23 10:22:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:22:31,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:22:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:22:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:22:31,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:22:31,001 INFO L87 Difference]: Start difference. First operand 4563 states and 6877 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 10:22:33,037 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 [] [2023-11-23 10:22:35,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:37,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:22:46,872 INFO L93 Difference]: Finished difference Result 16625 states and 25775 transitions. [2023-11-23 10:22:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 10:22:46,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 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 55 [2023-11-23 10:22:46,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:22:46,940 INFO L225 Difference]: With dead ends: 16625 [2023-11-23 10:22:46,940 INFO L226 Difference]: Without dead ends: 12075 [2023-11-23 10:22:46,965 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 [2023-11-23 10:22:46,970 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 3759 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 1968 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 4065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1968 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-11-23 10:22:46,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 3760 Invalid, 4065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1968 Valid, 2094 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2023-11-23 10:22:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12075 states. [2023-11-23 10:22:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12075 to 9064. [2023-11-23 10:22:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9064 states, 5966 states have (on average 1.4235668789808917) internal successors, (8493), 6174 states have internal predecessors, (8493), 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) [2023-11-23 10:22:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9064 states to 9064 states and 13673 transitions. [2023-11-23 10:22:47,567 INFO L78 Accepts]: Start accepts. Automaton has 9064 states and 13673 transitions. Word has length 55 [2023-11-23 10:22:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:22:47,568 INFO L495 AbstractCegarLoop]: Abstraction has 9064 states and 13673 transitions. [2023-11-23 10:22:47,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 10:22:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9064 states and 13673 transitions. [2023-11-23 10:22:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-23 10:22:47,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:22:47,574 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] [2023-11-23 10:22:47,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 10:22:47,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:22:47,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:22:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash -699932888, now seen corresponding path program 1 times [2023-11-23 10:22:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:22:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797155287] [2023-11-23 10:22:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:22:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:22:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:22:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:22:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:22:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:22:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:22:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:22:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:22:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 10:22:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:22:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 10:22:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:22:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 10:22:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:22:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797155287] [2023-11-23 10:22:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797155287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:22:48,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:22:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:22:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992406889] [2023-11-23 10:22:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:22:48,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:22:48,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:22:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:22:48,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:22:48,559 INFO L87 Difference]: Start difference. First operand 9064 states and 13673 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-23 10:22:50,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:52,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:22:54,657 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 [] [2023-11-23 10:23:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:23:06,107 INFO L93 Difference]: Finished difference Result 33150 states and 51404 transitions. [2023-11-23 10:23:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 10:23:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 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 71 [2023-11-23 10:23:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:23:06,218 INFO L225 Difference]: With dead ends: 33150 [2023-11-23 10:23:06,219 INFO L226 Difference]: Without dead ends: 24096 [2023-11-23 10:23:06,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:23:06,259 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 3249 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 1195 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1195 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-11-23 10:23:06,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3618 Valid, 4143 Invalid, 3618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1195 Valid, 2420 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2023-11-23 10:23:06,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24096 states. [2023-11-23 10:23:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24096 to 18057. [2023-11-23 10:23:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18057 states, 11899 states have (on average 1.4240692495167662) internal successors, (16945), 12305 states have internal predecessors, (16945), 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) [2023-11-23 10:23:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18057 states to 18057 states and 27259 transitions. [2023-11-23 10:23:07,136 INFO L78 Accepts]: Start accepts. Automaton has 18057 states and 27259 transitions. Word has length 71 [2023-11-23 10:23:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:23:07,138 INFO L495 AbstractCegarLoop]: Abstraction has 18057 states and 27259 transitions. [2023-11-23 10:23:07,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-23 10:23:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 18057 states and 27259 transitions. [2023-11-23 10:23:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 10:23:07,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:23:07,146 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] [2023-11-23 10:23:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 10:23:07,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:23:07,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:23:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 997073526, now seen corresponding path program 1 times [2023-11-23 10:23:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:23:07,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157395874] [2023-11-23 10:23:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:23:07,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:23:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:23:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:23:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:23:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:23:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:23:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:23:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:23:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 10:23:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:23:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 10:23:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:23:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 10:23:09,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:23:09,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157395874] [2023-11-23 10:23:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157395874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:23:09,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:23:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 10:23:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643508047] [2023-11-23 10:23:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:23:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 10:23:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:23:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 10:23:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-23 10:23:09,763 INFO L87 Difference]: Start difference. First operand 18057 states and 27259 transitions. Second operand has 14 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 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) [2023-11-23 10:23:11,805 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 [] [2023-11-23 10:23:13,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:15,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:17,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:20,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:22,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:24,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:26,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:28,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:30,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:32,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:23:34,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:24:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:24:08,036 INFO L93 Difference]: Finished difference Result 60127 states and 93165 transitions. [2023-11-23 10:24:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 10:24:08,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 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 74 [2023-11-23 10:24:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:24:08,274 INFO L225 Difference]: With dead ends: 60127 [2023-11-23 10:24:08,275 INFO L226 Difference]: Without dead ends: 42083 [2023-11-23 10:24:08,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2023-11-23 10:24:08,346 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 4037 mSDsluCounter, 12333 mSDsCounter, 0 mSdLazyCounter, 9103 mSolverCounterSat, 2145 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4414 SdHoareTripleChecker+Valid, 13683 SdHoareTripleChecker+Invalid, 11260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2145 IncrementalHoareTripleChecker+Valid, 9103 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.4s IncrementalHoareTripleChecker+Time [2023-11-23 10:24:08,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4414 Valid, 13683 Invalid, 11260 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2145 Valid, 9103 Invalid, 12 Unknown, 0 Unchecked, 55.4s Time] [2023-11-23 10:24:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42083 states. [2023-11-23 10:24:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42083 to 31457. [2023-11-23 10:24:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31457 states, 20734 states have (on average 1.4240860422494455) internal successors, (29527), 21447 states have internal predecessors, (29527), 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) [2023-11-23 10:24:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31457 states to 31457 states and 47539 transitions. [2023-11-23 10:24:10,092 INFO L78 Accepts]: Start accepts. Automaton has 31457 states and 47539 transitions. Word has length 74 [2023-11-23 10:24:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:24:10,093 INFO L495 AbstractCegarLoop]: Abstraction has 31457 states and 47539 transitions. [2023-11-23 10:24:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 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) [2023-11-23 10:24:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31457 states and 47539 transitions. [2023-11-23 10:24:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 10:24:10,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:24:10,097 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] [2023-11-23 10:24:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 10:24:10,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:24:10,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:24:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1577272762, now seen corresponding path program 1 times [2023-11-23 10:24:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:24:10,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844499372] [2023-11-23 10:24:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:24:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:24:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:24:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:24:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:24:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:24:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:24:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:24:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:24:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 10:24:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:24:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 10:24:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 10:24:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 10:24:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 10:24:11,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:24:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844499372] [2023-11-23 10:24:11,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844499372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:24:11,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:24:11,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:24:11,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564775491] [2023-11-23 10:24:11,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:24:11,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:24:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:24:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:24:11,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:24:11,319 INFO L87 Difference]: Start difference. First operand 31457 states and 47539 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 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) [2023-11-23 10:24:13,347 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 [] [2023-11-23 10:24:15,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:24:17,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:24:19,454 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 [] [2023-11-23 10:24:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:24:34,182 INFO L93 Difference]: Finished difference Result 73380 states and 113257 transitions. [2023-11-23 10:24:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 10:24:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 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 84 [2023-11-23 10:24:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:24:34,397 INFO L225 Difference]: With dead ends: 73380 [2023-11-23 10:24:34,397 INFO L226 Difference]: Without dead ends: 41936 [2023-11-23 10:24:34,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:24:34,472 INFO L413 NwaCegarLoop]: 2618 mSDtfsCounter, 2566 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 715 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 6583 SdHoareTripleChecker+Invalid, 4575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-11-23 10:24:34,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2926 Valid, 6583 Invalid, 4575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [715 Valid, 3856 Invalid, 4 Unknown, 0 Unchecked, 21.2s Time] [2023-11-23 10:24:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41936 states. [2023-11-23 10:24:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41936 to 31438. [2023-11-23 10:24:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31438 states, 20715 states have (on average 1.4237026309437606) internal successors, (29492), 21430 states have internal predecessors, (29492), 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) [2023-11-23 10:24:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31438 states to 31438 states and 47504 transitions. [2023-11-23 10:24:36,109 INFO L78 Accepts]: Start accepts. Automaton has 31438 states and 47504 transitions. Word has length 84 [2023-11-23 10:24:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:24:36,110 INFO L495 AbstractCegarLoop]: Abstraction has 31438 states and 47504 transitions. [2023-11-23 10:24:36,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 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) [2023-11-23 10:24:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 31438 states and 47504 transitions. [2023-11-23 10:24:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 10:24:36,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:24:36,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:24:36,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 10:24:36,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:24:36,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:24:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1965254358, now seen corresponding path program 1 times [2023-11-23 10:24:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:24:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300064163] [2023-11-23 10:24:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:24:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:24:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:24:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:24:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:24:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:24:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:24:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:24:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:24:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 10:24:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:24:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 10:24:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 10:24:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 10:24:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:24:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 10:24:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:24:37,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300064163] [2023-11-23 10:24:37,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300064163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:24:37,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:24:37,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 10:24:37,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714577232] [2023-11-23 10:24:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:24:37,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 10:24:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:24:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 10:24:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 10:24:37,226 INFO L87 Difference]: Start difference. First operand 31438 states and 47504 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 10:24:39,252 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 [] [2023-11-23 10:24:41,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:24:43,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:24:45,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:24:47,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:25:00,259 INFO L93 Difference]: Finished difference Result 73342 states and 113188 transitions. [2023-11-23 10:25:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 10:25:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 4 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 89 [2023-11-23 10:25:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:25:00,421 INFO L225 Difference]: With dead ends: 73342 [2023-11-23 10:25:00,422 INFO L226 Difference]: Without dead ends: 41917 [2023-11-23 10:25:00,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:25:00,499 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 1112 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 848 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4665 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 848 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-11-23 10:25:00,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 4665 Invalid, 3600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [848 Valid, 2747 Invalid, 5 Unknown, 0 Unchecked, 21.2s Time] [2023-11-23 10:25:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41917 states. [2023-11-23 10:25:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41917 to 31436. [2023-11-23 10:25:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31436 states, 20719 states have (on average 1.423427771610599) internal successors, (29492), 21434 states have internal predecessors, (29492), 8984 states have call successors, (8984), 1726 states have call predecessors, (8984), 1732 states have return successors, (9020), 8863 states have call predecessors, (9020), 8964 states have call successors, (9020) [2023-11-23 10:25:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31436 states to 31436 states and 47496 transitions. [2023-11-23 10:25:02,175 INFO L78 Accepts]: Start accepts. Automaton has 31436 states and 47496 transitions. Word has length 89 [2023-11-23 10:25:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:25:02,176 INFO L495 AbstractCegarLoop]: Abstraction has 31436 states and 47496 transitions. [2023-11-23 10:25:02,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 10:25:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 31436 states and 47496 transitions. [2023-11-23 10:25:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 10:25:02,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:25:02,180 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 10:25:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 10:25:02,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:25:02,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:25:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1464486679, now seen corresponding path program 1 times [2023-11-23 10:25:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:25:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490389009] [2023-11-23 10:25:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:25:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:25:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:25:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:25:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:25:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:25:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:25:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:25:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:25:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 10:25:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:25:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 10:25:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 10:25:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 10:25:03,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:25:03,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490389009] [2023-11-23 10:25:03,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490389009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:25:03,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:25:03,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 10:25:03,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961462096] [2023-11-23 10:25:03,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:25:03,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 10:25:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:25:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 10:25:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:25:03,493 INFO L87 Difference]: Start difference. First operand 31436 states and 47496 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 10:25:05,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:07,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:09,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:11,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:13,673 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 [] [2023-11-23 10:25:29,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:25:29,200 INFO L93 Difference]: Finished difference Result 55951 states and 85943 transitions. [2023-11-23 10:25:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 10:25:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 87 [2023-11-23 10:25:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:25:29,356 INFO L225 Difference]: With dead ends: 55951 [2023-11-23 10:25:29,372 INFO L226 Difference]: Without dead ends: 24528 [2023-11-23 10:25:29,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-23 10:25:29,450 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 2626 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 877 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 6374 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2023-11-23 10:25:29,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 6374 Invalid, 4419 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [877 Valid, 3537 Invalid, 5 Unknown, 0 Unchecked, 24.1s Time] [2023-11-23 10:25:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24528 states. [2023-11-23 10:25:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24528 to 17417. [2023-11-23 10:25:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 11461 states have (on average 1.4156705348573424) internal successors, (16225), 11864 states have internal predecessors, (16225), 4941 states have call successors, (4941), 1008 states have call predecessors, (4941), 1014 states have return successors, (4938), 4859 states have call predecessors, (4938), 4921 states have call successors, (4938) [2023-11-23 10:25:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 26104 transitions. [2023-11-23 10:25:30,544 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 26104 transitions. Word has length 87 [2023-11-23 10:25:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:25:30,545 INFO L495 AbstractCegarLoop]: Abstraction has 17417 states and 26104 transitions. [2023-11-23 10:25:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 10:25:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 26104 transitions. [2023-11-23 10:25:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 10:25:30,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:25:30,550 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 10:25:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 10:25:30,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:25:30,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:25:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1238757652, now seen corresponding path program 1 times [2023-11-23 10:25:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:25:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309275812] [2023-11-23 10:25:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:25:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:25:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:25:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:25:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 10:25:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:25:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:25:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 10:25:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:25:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 10:25:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 10:25:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:25:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 10:25:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 10:25:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:25:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 10:25:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:25:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 10:25:35,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:25:35,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309275812] [2023-11-23 10:25:35,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309275812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:25:35,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:25:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-23 10:25:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3144801] [2023-11-23 10:25:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:25:35,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 10:25:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:25:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 10:25:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-11-23 10:25:35,914 INFO L87 Difference]: Start difference. First operand 17417 states and 26104 transitions. Second operand has 18 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 6 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) [2023-11-23 10:25:37,943 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 [] [2023-11-23 10:25:39,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:42,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:44,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:46,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:48,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:50,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:52,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:54,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:56,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:25:58,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:26:00,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 10:26:02,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15