./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:24,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:24,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:04:24,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:24,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:24,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:24,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:24,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:24,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:24,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:24,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:24,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:24,526 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:24,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:24,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:24,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:24,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:24,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:24,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:24,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:24,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:24,533 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:24,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:24,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:24,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:24,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:24,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:24,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:24,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:24,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:24,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:24,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:24,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:24,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:24,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:24,542 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:24,542 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2023-11-06 22:04:24,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:24,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:24,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:24,970 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:24,971 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:24,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-06 22:04:28,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:28,654 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:28,655 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-06 22:04:28,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/data/8777f704f/21c24dcb47ba4a47afce86c2b1f329c2/FLAGafe8eb735 [2023-11-06 22:04:28,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/data/8777f704f/21c24dcb47ba4a47afce86c2b1f329c2 [2023-11-06 22:04:28,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:28,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:28,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:28,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:28,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:28,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:28" (1/1) ... [2023-11-06 22:04:28,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac91b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:28, skipping insertion in model container [2023-11-06 22:04:28,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:28" (1/1) ... [2023-11-06 22:04:28,845 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:30,444 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2023-11-06 22:04:30,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:30,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:30,655 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)); [2775-2776] [2023-11-06 22:04:30,658 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2794] [2023-11-06 22:04:30,658 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2797] [2023-11-06 22:04:30,658 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2800] [2023-11-06 22:04:30,659 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2803] [2023-11-06 22:04:30,731 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3806] [2023-11-06 22:04:30,732 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3828] [2023-11-06 22:04:30,878 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2023-11-06 22:04:30,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:31,034 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:31,035 WARN L672 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:31,035 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:31,043 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:31,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31 WrapperNode [2023-11-06 22:04:31,044 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:31,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:31,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:31,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:31,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,372 INFO L138 Inliner]: procedures = 191, calls = 1310, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 3618 [2023-11-06 22:04:31,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:31,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:31,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:31,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:31,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:31,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:31,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:31,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:31,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (1/1) ... [2023-11-06 22:04:31,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:31,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:31,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797bd0bf-fb19-4b32-a57c-fe53a45cc853/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-06 22:04:31,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-06 22:04:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-06 22:04:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-06 22:04:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-06 22:04:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-06 22:04:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:04:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 22:04:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:04:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:04:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-06 22:04:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-06 22:04:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-06 22:04:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-06 22:04:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 22:04:31,745 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 22:04:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-06 22:04:31,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-06 22:04:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-06 22:04:31,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-06 22:04:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-06 22:04:31,746 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-06 22:04:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:04:31,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:04:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-06 22:04:31,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-06 22:04:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2023-11-06 22:04:31,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2023-11-06 22:04:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-06 22:04:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-06 22:04:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-06 22:04:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-06 22:04:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-06 22:04:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-06 22:04:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-06 22:04:31,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-06 22:04:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-06 22:04:31,748 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-06 22:04:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:04:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 22:04:31,748 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 22:04:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 22:04:31,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 22:04:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-06 22:04:31,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-06 22:04:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-06 22:04:31,749 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-06 22:04:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-06 22:04:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-06 22:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-06 22:04:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-06 22:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 22:04:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 22:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-06 22:04:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-06 22:04:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:04:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-06 22:04:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-06 22:04:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-06 22:04:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-06 22:04:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-06 22:04:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-06 22:04:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-06 22:04:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-06 22:04:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-06 22:04:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-06 22:04:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-06 22:04:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-06 22:04:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-06 22:04:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-06 22:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-06 22:04:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-06 22:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 22:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-06 22:04:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-06 22:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-06 22:04:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-06 22:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-06 22:04:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-06 22:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-06 22:04:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-06 22:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-06 22:04:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-06 22:04:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-06 22:04:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-06 22:04:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-06 22:04:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-06 22:04:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-06 22:04:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-06 22:04:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-06 22:04:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-06 22:04:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 22:04:31,756 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 22:04:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-06 22:04:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-06 22:04:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-06 22:04:31,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-06 22:04:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:04:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-06 22:04:31,761 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-06 22:04:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-06 22:04:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-06 22:04:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-06 22:04:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-06 22:04:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:04:31,763 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:04:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-06 22:04:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-06 22:04:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 22:04:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 22:04:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-06 22:04:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-06 22:04:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-06 22:04:31,766 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-06 22:04:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-06 22:04:31,766 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-06 22:04:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 22:04:31,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 22:04:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-06 22:04:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-06 22:04:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-06 22:04:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-06 22:04:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-06 22:04:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-06 22:04:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:04:31,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:04:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-06 22:04:31,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-06 22:04:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-06 22:04:31,769 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-06 22:04:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-06 22:04:31,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-06 22:04:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-06 22:04:31,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-06 22:04:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-06 22:04:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-06 22:04:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-06 22:04:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-06 22:04:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 22:04:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-06 22:04:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-06 22:04:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-06 22:04:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-06 22:04:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 22:04:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 22:04:32,425 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:32,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:52,323 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:52,346 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:52,347 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:04:52,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:52 BoogieIcfgContainer [2023-11-06 22:04:52,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:52,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:52,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:52,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:52,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:28" (1/3) ... [2023-11-06 22:04:52,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434817b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:52, skipping insertion in model container [2023-11-06 22:04:52,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31" (2/3) ... [2023-11-06 22:04:52,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434817b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:52, skipping insertion in model container [2023-11-06 22:04:52,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:52" (3/3) ... [2023-11-06 22:04:52,366 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-06 22:04:52,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:52,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:04:52,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:52,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7703857, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:52,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:04:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 937 states have (on average 1.3852721451440768) internal successors, (1298), 977 states have internal predecessors, (1298), 358 states have call successors, (358), 67 states have call predecessors, (358), 67 states have return successors, (358), 355 states have call predecessors, (358), 358 states have call successors, (358) [2023-11-06 22:04:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:04:52,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:52,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:52,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:52,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:52,549 INFO L85 PathProgramCache]: Analyzing trace with hash -984991709, now seen corresponding path program 1 times [2023-11-06 22:04:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854428137] [2023-11-06 22:04:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:04:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:04:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854428137] [2023-11-06 22:04:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854428137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:54,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:54,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905714086] [2023-11-06 22:04:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:54,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:54,929 INFO L87 Difference]: Start difference. First operand has 1364 states, 937 states have (on average 1.3852721451440768) internal successors, (1298), 977 states have internal predecessors, (1298), 358 states have call successors, (358), 67 states have call predecessors, (358), 67 states have return successors, (358), 355 states have call predecessors, (358), 358 states have call successors, (358) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:04:57,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:05:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:05,543 INFO L93 Difference]: Finished difference Result 4417 states and 6717 transitions. [2023-11-06 22:05:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:05,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-06 22:05:05,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:05,618 INFO L225 Difference]: With dead ends: 4417 [2023-11-06 22:05:05,618 INFO L226 Difference]: Without dead ends: 3053 [2023-11-06 22:05:05,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:05,649 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 3158 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 1000 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3503 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3503 Valid, 3881 Invalid, 2734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1000 Valid, 1733 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2023-11-06 22:05:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-11-06 22:05:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2486. [2023-11-06 22:05:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 1690 states have (on average 1.3579881656804733) internal successors, (2295), 1748 states have internal predecessors, (2295), 671 states have call successors, (671), 126 states have call predecessors, (671), 124 states have return successors, (662), 655 states have call predecessors, (662), 662 states have call successors, (662) [2023-11-06 22:05:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3628 transitions. [2023-11-06 22:05:06,033 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3628 transitions. Word has length 17 [2023-11-06 22:05:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:06,034 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3628 transitions. [2023-11-06 22:05:06,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:05:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3628 transitions. [2023-11-06 22:05:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:05:06,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:06,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:05:06,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:06,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash -471115181, now seen corresponding path program 1 times [2023-11-06 22:05:06,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:06,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800832308] [2023-11-06 22:05:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:05:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:05:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800832308] [2023-11-06 22:05:07,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800832308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:07,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:07,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:07,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165575087] [2023-11-06 22:05:07,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:07,580 INFO L87 Difference]: Start difference. First operand 2486 states and 3628 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:05:09,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:05:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:19,021 INFO L93 Difference]: Finished difference Result 7279 states and 10857 transitions. [2023-11-06 22:05:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:19,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-06 22:05:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:19,085 INFO L225 Difference]: With dead ends: 7279 [2023-11-06 22:05:19,085 INFO L226 Difference]: Without dead ends: 6064 [2023-11-06 22:05:19,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:19,098 INFO L413 NwaCegarLoop]: 3002 mSDtfsCounter, 2621 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 591 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 5969 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:19,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 5969 Invalid, 2941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [591 Valid, 2349 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2023-11-06 22:05:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2023-11-06 22:05:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 4930. [2023-11-06 22:05:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 3356 states have (on average 1.3584624553039333) internal successors, (4559), 3466 states have internal predecessors, (4559), 1326 states have call successors, (1326), 251 states have call predecessors, (1326), 247 states have return successors, (1314), 1300 states have call predecessors, (1314), 1314 states have call successors, (1314) [2023-11-06 22:05:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7199 transitions. [2023-11-06 22:05:19,459 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7199 transitions. Word has length 18 [2023-11-06 22:05:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:19,459 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7199 transitions. [2023-11-06 22:05:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:05:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7199 transitions. [2023-11-06 22:05:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:05:19,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:19,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:05:19,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:19,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash 671835386, now seen corresponding path program 1 times [2023-11-06 22:05:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502828893] [2023-11-06 22:05:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:05:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:05:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:05:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:05:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 22:05:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502828893] [2023-11-06 22:05:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502828893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:21,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:21,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878994381] [2023-11-06 22:05:21,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:21,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:21,023 INFO L87 Difference]: Start difference. First operand 4930 states and 7199 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:05:23,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:05:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:30,873 INFO L93 Difference]: Finished difference Result 13266 states and 19830 transitions. [2023-11-06 22:05:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:30,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-06 22:05:30,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:30,994 INFO L225 Difference]: With dead ends: 13266 [2023-11-06 22:05:30,994 INFO L226 Difference]: Without dead ends: 12036 [2023-11-06 22:05:31,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:31,012 INFO L413 NwaCegarLoop]: 2503 mSDtfsCounter, 2598 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 800 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:31,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2939 Valid, 4767 Invalid, 2793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [800 Valid, 1992 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2023-11-06 22:05:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2023-11-06 22:05:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 9765. [2023-11-06 22:05:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9765 states, 6650 states have (on average 1.3595488721804512) internal successors, (9041), 6866 states have internal predecessors, (9041), 2623 states have call successors, (2623), 497 states have call predecessors, (2623), 491 states have return successors, (2609), 2577 states have call predecessors, (2609), 2609 states have call successors, (2609) [2023-11-06 22:05:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 14273 transitions. [2023-11-06 22:05:31,860 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 14273 transitions. Word has length 40 [2023-11-06 22:05:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:31,861 INFO L495 AbstractCegarLoop]: Abstraction has 9765 states and 14273 transitions. [2023-11-06 22:05:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:05:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 14273 transitions. [2023-11-06 22:05:31,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:05:31,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:31,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:31,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:05:31,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:31,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1308621272, now seen corresponding path program 1 times [2023-11-06 22:05:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140020838] [2023-11-06 22:05:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:35,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:05:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:05:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:05:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:05:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:05:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140020838] [2023-11-06 22:05:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140020838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:05:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475639030] [2023-11-06 22:05:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:35,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:05:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:05:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:05:35,956 INFO L87 Difference]: Start difference. First operand 9765 states and 14273 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:05:38,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:09,134 INFO L93 Difference]: Finished difference Result 27035 states and 40316 transitions. [2023-11-06 22:06:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:06:09,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2023-11-06 22:06:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:09,443 INFO L225 Difference]: With dead ends: 27035 [2023-11-06 22:06:09,443 INFO L226 Difference]: Without dead ends: 20977 [2023-11-06 22:06:09,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:06:09,480 INFO L413 NwaCegarLoop]: 2210 mSDtfsCounter, 3007 mSDsluCounter, 23100 mSDsCounter, 0 mSdLazyCounter, 12573 mSolverCounterSat, 1208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3233 SdHoareTripleChecker+Valid, 25310 SdHoareTripleChecker+Invalid, 13782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 12573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:09,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3233 Valid, 25310 Invalid, 13782 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1208 Valid, 12573 Invalid, 1 Unknown, 0 Unchecked, 30.6s Time] [2023-11-06 22:06:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20977 states. [2023-11-06 22:06:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20977 to 17007. [2023-11-06 22:06:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17007 states, 11576 states have (on average 1.360487214927436) internal successors, (15749), 11949 states have internal predecessors, (15749), 4571 states have call successors, (4571), 866 states have call predecessors, (4571), 859 states have return successors, (4560), 4499 states have call predecessors, (4560), 4556 states have call successors, (4560) [2023-11-06 22:06:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17007 states to 17007 states and 24880 transitions. [2023-11-06 22:06:10,764 INFO L78 Accepts]: Start accepts. Automaton has 17007 states and 24880 transitions. Word has length 43 [2023-11-06 22:06:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:10,765 INFO L495 AbstractCegarLoop]: Abstraction has 17007 states and 24880 transitions. [2023-11-06 22:06:10,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:06:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17007 states and 24880 transitions. [2023-11-06 22:06:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:06:10,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:10,772 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:06:10,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:06:10,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:10,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 964900599, now seen corresponding path program 1 times [2023-11-06 22:06:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:10,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977854268] [2023-11-06 22:06:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:06:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:06:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:06:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:06:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:06:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:06:16,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:16,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977854268] [2023-11-06 22:06:16,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977854268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:16,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:16,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 22:06:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253287481] [2023-11-06 22:06:16,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:16,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:06:16,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:16,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:06:16,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:06:16,021 INFO L87 Difference]: Start difference. First operand 17007 states and 24880 transitions. Second operand has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:06:18,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:51,363 INFO L93 Difference]: Finished difference Result 25083 states and 37591 transitions. [2023-11-06 22:06:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:06:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2023-11-06 22:06:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:51,496 INFO L225 Difference]: With dead ends: 25083 [2023-11-06 22:06:51,496 INFO L226 Difference]: Without dead ends: 23890 [2023-11-06 22:06:51,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:06:51,515 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 3321 mSDsluCounter, 18735 mSDsCounter, 0 mSdLazyCounter, 12654 mSolverCounterSat, 1360 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 20237 SdHoareTripleChecker+Invalid, 14015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1360 IncrementalHoareTripleChecker+Valid, 12654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:51,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3540 Valid, 20237 Invalid, 14015 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1360 Valid, 12654 Invalid, 1 Unknown, 0 Unchecked, 31.8s Time] [2023-11-06 22:06:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23890 states. [2023-11-06 22:06:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23890 to 18183. [2023-11-06 22:06:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18183 states, 12375 states have (on average 1.3608888888888888) internal successors, (16841), 12775 states have internal predecessors, (16841), 4888 states have call successors, (4888), 926 states have call predecessors, (4888), 919 states have return successors, (4877), 4811 states have call predecessors, (4877), 4873 states have call successors, (4877) [2023-11-06 22:06:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 26606 transitions. [2023-11-06 22:06:53,597 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 26606 transitions. Word has length 50 [2023-11-06 22:06:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:53,600 INFO L495 AbstractCegarLoop]: Abstraction has 18183 states and 26606 transitions. [2023-11-06 22:06:53,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:06:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 26606 transitions. [2023-11-06 22:06:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:06:53,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:53,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:53,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:06:53,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:53,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:53,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1320089785, now seen corresponding path program 1 times [2023-11-06 22:06:53,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716055806] [2023-11-06 22:06:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:06:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:06:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:06:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-06 22:06:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:06:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:06:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:55,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:55,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716055806] [2023-11-06 22:06:55,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716055806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:55,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:55,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:06:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19220618] [2023-11-06 22:06:55,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:55,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:06:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:06:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:06:55,019 INFO L87 Difference]: Start difference. First operand 18183 states and 26606 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:06:57,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:06:59,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:07,518 INFO L93 Difference]: Finished difference Result 22422 states and 33632 transitions. [2023-11-06 22:07:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:07:07,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-11-06 22:07:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:07,656 INFO L225 Difference]: With dead ends: 22422 [2023-11-06 22:07:07,656 INFO L226 Difference]: Without dead ends: 22401 [2023-11-06 22:07:07,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:07:07,671 INFO L413 NwaCegarLoop]: 2396 mSDtfsCounter, 2927 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 658 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3260 SdHoareTripleChecker+Valid, 5217 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:07,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3260 Valid, 5217 Invalid, 2821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [658 Valid, 2161 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2023-11-06 22:07:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22401 states. [2023-11-06 22:07:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22401 to 18147. [2023-11-06 22:07:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18147 states, 12351 states have (on average 1.3608614687069873) internal successors, (16808), 12751 states have internal predecessors, (16808), 4880 states have call successors, (4880), 922 states have call predecessors, (4880), 915 states have return successors, (4871), 4803 states have call predecessors, (4871), 4867 states have call successors, (4871) [2023-11-06 22:07:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 26559 transitions. [2023-11-06 22:07:09,478 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 26559 transitions. Word has length 57 [2023-11-06 22:07:09,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:09,479 INFO L495 AbstractCegarLoop]: Abstraction has 18147 states and 26559 transitions. [2023-11-06 22:07:09,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:07:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 26559 transitions. [2023-11-06 22:07:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:07:09,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:09,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:09,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:07:09,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:09,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash -11671344, now seen corresponding path program 1 times [2023-11-06 22:07:09,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399187688] [2023-11-06 22:07:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:07:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:07:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:07:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:07:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:07:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:07:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:07:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:07:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:07:13,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:13,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399187688] [2023-11-06 22:07:13,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399187688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:13,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:13,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 22:07:13,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343493002] [2023-11-06 22:07:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:13,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:07:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:13,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:07:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:07:13,657 INFO L87 Difference]: Start difference. First operand 18147 states and 26559 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-06 22:07:15,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:17,739 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 []