./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/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_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/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_640c2a02-587e-45db-ba23-c47b554c8ad4/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 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:08:02,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:08:02,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 23:08:02,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:08:02,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:08:02,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:08:02,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:08:02,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:08:02,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:08:02,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:08:02,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:08:02,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:08:02,521 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:08:02,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:08:02,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:08:02,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:08:02,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:08:02,523 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:08:02,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:08:02,524 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:08:02,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:08:02,526 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:08:02,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:08:02,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:08:02,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:08:02,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:02,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:08:02,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:08:02,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:08:02,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:08:02,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:08:02,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:08:02,530 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:08:02,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:08:02,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:08:02,531 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:08:02,531 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_640c2a02-587e-45db-ba23-c47b554c8ad4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2023-11-06 23:08:02,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:08:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:08:02,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:08:02,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:08:02,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:08:02,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-06 23:08:06,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:06,721 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:06,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-06 23:08:06,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/data/636f50d73/4cbd88afc7414253b944fc9224b024d5/FLAG087b62624 [2023-11-06 23:08:06,784 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/data/636f50d73/4cbd88afc7414253b944fc9224b024d5 [2023-11-06 23:08:06,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:06,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:06,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:06,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:06,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:06,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:06" (1/1) ... [2023-11-06 23:08:06,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7269a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:06, skipping insertion in model container [2023-11-06 23:08:06,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:06" (1/1) ... [2023-11-06 23:08:06,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:08,047 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_640c2a02-587e-45db-ba23-c47b554c8ad4/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2023-11-06 23:08:08,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:08,661 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:08:08,776 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)); [3320-3321] [2023-11-06 23:08:08,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3358] [2023-11-06 23:08:08,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3361] [2023-11-06 23:08:08,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3364] [2023-11-06 23:08:08,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3367] [2023-11-06 23:08:08,835 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_640c2a02-587e-45db-ba23-c47b554c8ad4/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2023-11-06 23:08:09,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [5850] [2023-11-06 23:08:09,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [5855] [2023-11-06 23:08:09,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [5860] [2023-11-06 23:08:09,065 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [5865] [2023-11-06 23:08:09,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___0), "+m" (*__ptr___3): "0" (__x___0): "memory"); [5899] [2023-11-06 23:08:09,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___0), "+m" (*__ptr___4): "0" (__x___0): "memory"); [5904] [2023-11-06 23:08:09,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___0), "+m" (*__ptr___5): "0" (__x___0): "memory"); [5909] [2023-11-06 23:08:09,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___0), "+m" (*__ptr___6): "0" (__x___0): "memory"); [5914] [2023-11-06 23:08:09,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:09,213 WARN L672 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:09,213 WARN L672 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:09,214 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:09,214 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:09,222 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:08:09,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09 WrapperNode [2023-11-06 23:08:09,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:09,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:09,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:08:09,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:08:09,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,557 INFO L138 Inliner]: procedures = 204, calls = 2437, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 5417 [2023-11-06 23:08:09,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:09,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:08:09,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:08:09,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:08:09,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:08:09,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:08:09,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:08:09,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:08:09,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (1/1) ... [2023-11-06 23:08:09,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:09,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:08:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:08:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-06 23:08:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-06 23:08:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2023-11-06 23:08:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2023-11-06 23:08:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-06 23:08:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-06 23:08:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-06 23:08:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 23:08:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 23:08:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-06 23:08:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-06 23:08:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-11-06 23:08:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-11-06 23:08:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2023-11-06 23:08:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2023-11-06 23:08:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-06 23:08:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-06 23:08:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 23:08:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 23:08:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2023-11-06 23:08:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2023-11-06 23:08:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-11-06 23:08:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-11-06 23:08:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-06 23:08:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-06 23:08:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2023-11-06 23:08:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2023-11-06 23:08:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 23:08:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 23:08:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 23:08:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 23:08:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2023-11-06 23:08:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2023-11-06 23:08:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 23:08:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 23:08:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2023-11-06 23:08:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2023-11-06 23:08:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:08:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:08:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2023-11-06 23:08:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2023-11-06 23:08:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-06 23:08:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-06 23:08:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2023-11-06 23:08:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2023-11-06 23:08:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2023-11-06 23:08:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2023-11-06 23:08:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2023-11-06 23:08:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2023-11-06 23:08:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-06 23:08:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-06 23:08:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-06 23:08:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-06 23:08:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:08:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-06 23:08:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2023-11-06 23:08:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2023-11-06 23:08:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2023-11-06 23:08:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2023-11-06 23:08:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2023-11-06 23:08:09,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2023-11-06 23:08:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:08:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-06 23:08:09,985 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-06 23:08:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 23:08:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 23:08:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:08:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2023-11-06 23:08:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2023-11-06 23:08:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 23:08:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2023-11-06 23:08:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2023-11-06 23:08:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-06 23:08:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-06 23:08:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-06 23:08:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-06 23:08:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 23:08:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 23:08:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 23:08:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 23:08:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2023-11-06 23:08:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2023-11-06 23:08:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-06 23:08:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-06 23:08:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-06 23:08:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-06 23:08:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_reg [2023-11-06 23:08:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_reg [2023-11-06 23:08:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 23:08:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 23:08:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-06 23:08:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-06 23:08:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-06 23:08:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-06 23:08:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-06 23:08:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-06 23:08:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-11-06 23:08:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-11-06 23:08:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-06 23:08:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-06 23:08:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-06 23:08:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-06 23:08:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 23:08:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-06 23:08:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-06 23:08:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-06 23:08:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-06 23:08:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 23:08:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:08:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-06 23:08:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-06 23:08:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2023-11-06 23:08:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2023-11-06 23:08:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-06 23:08:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-06 23:08:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-06 23:08:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-06 23:08:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2023-11-06 23:08:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2023-11-06 23:08:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2023-11-06 23:08:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2023-11-06 23:08:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 23:08:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 23:08:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:08:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-06 23:08:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-06 23:08:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_der [2023-11-06 23:08:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_der [2023-11-06 23:08:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2023-11-06 23:08:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2023-11-06 23:08:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2023-11-06 23:08:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2023-11-06 23:08:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 23:08:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 23:08:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-06 23:08:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-06 23:08:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-06 23:08:10,000 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-06 23:08:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2023-11-06 23:08:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2023-11-06 23:08:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:08:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-06 23:08:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2023-11-06 23:08:10,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2023-11-06 23:08:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:08:10,006 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2023-11-06 23:08:10,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2023-11-06 23:08:10,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:08:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 23:08:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2023-11-06 23:08:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2023-11-06 23:08:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-06 23:08:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-06 23:08:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-06 23:08:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-06 23:08:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-06 23:08:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-06 23:08:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-06 23:08:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-06 23:08:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2023-11-06 23:08:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2023-11-06 23:08:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2023-11-06 23:08:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2023-11-06 23:08:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-06 23:08:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-06 23:08:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2023-11-06 23:08:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2023-11-06 23:08:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-06 23:08:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-06 23:08:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2023-11-06 23:08:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2023-11-06 23:08:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:08:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2023-11-06 23:08:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2023-11-06 23:08:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-06 23:08:10,018 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-06 23:08:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:08:10,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:08:10,851 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:08:10,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:08:11,102 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-06 23:09:02,908 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:09:02,941 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:09:02,942 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:09:02,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:02 BoogieIcfgContainer [2023-11-06 23:09:02,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:09:02,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:09:02,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:09:02,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:09:02,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:08:06" (1/3) ... [2023-11-06 23:09:02,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698717bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:02, skipping insertion in model container [2023-11-06 23:09:02,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:09" (2/3) ... [2023-11-06 23:09:02,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698717bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:02, skipping insertion in model container [2023-11-06 23:09:02,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:02" (3/3) ... [2023-11-06 23:09:02,962 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-06 23:09:02,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:09:02,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:09:03,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:09:03,133 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;@11c92229, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:09:03,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:09:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 1922 states, 1397 states have (on average 1.4452397995705082) internal successors, (2019), 1426 states have internal predecessors, (2019), 445 states have call successors, (445), 79 states have call predecessors, (445), 78 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-11-06 23:09:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 23:09:03,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:03,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:03,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:03,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1605518085, now seen corresponding path program 1 times [2023-11-06 23:09:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159765295] [2023-11-06 23:09:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:09:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:09:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:09:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:09:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:09:05,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:05,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159765295] [2023-11-06 23:09:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159765295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:05,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:05,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312032809] [2023-11-06 23:09:05,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:05,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:05,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:05,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:05,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:05,651 INFO L87 Difference]: Start difference. First operand has 1922 states, 1397 states have (on average 1.4452397995705082) internal successors, (2019), 1426 states have internal predecessors, (2019), 445 states have call successors, (445), 79 states have call predecessors, (445), 78 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 23:09:07,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:09,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:19,482 INFO L93 Difference]: Finished difference Result 6278 states and 10100 transitions. [2023-11-06 23:09:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2023-11-06 23:09:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:19,564 INFO L225 Difference]: With dead ends: 6278 [2023-11-06 23:09:19,564 INFO L226 Difference]: Without dead ends: 4343 [2023-11-06 23:09:19,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:19,614 INFO L413 NwaCegarLoop]: 2478 mSDtfsCounter, 3943 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 1252 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1252 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:19,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 6367 Invalid, 3262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1252 Valid, 2008 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2023-11-06 23:09:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2023-11-06 23:09:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 3583. [2023-11-06 23:09:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 2599 states have (on average 1.4274721046556367) internal successors, (3710), 2637 states have internal predecessors, (3710), 836 states have call successors, (836), 148 states have call predecessors, (836), 147 states have return successors, (831), 827 states have call predecessors, (831), 831 states have call successors, (831) [2023-11-06 23:09:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 5377 transitions. [2023-11-06 23:09:20,050 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 5377 transitions. Word has length 43 [2023-11-06 23:09:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:20,052 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 5377 transitions. [2023-11-06 23:09:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 23:09:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 5377 transitions. [2023-11-06 23:09:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 23:09:20,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:20,074 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:20,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:09:20,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:20,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:20,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1783269719, now seen corresponding path program 1 times [2023-11-06 23:09:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648393672] [2023-11-06 23:09:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:09:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:09:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:09:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:09:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:09:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:09:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:09:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648393672] [2023-11-06 23:09:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648393672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:21,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585975051] [2023-11-06 23:09:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:21,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:21,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:21,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:21,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:21,845 INFO L87 Difference]: Start difference. First operand 3583 states and 5377 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:09:23,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:25,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:47,746 INFO L93 Difference]: Finished difference Result 8642 states and 13534 transitions. [2023-11-06 23:09:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:09:47,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2023-11-06 23:09:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:47,831 INFO L225 Difference]: With dead ends: 8642 [2023-11-06 23:09:47,832 INFO L226 Difference]: Without dead ends: 8629 [2023-11-06 23:09:47,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:47,842 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 6892 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 6444 mSolverCounterSat, 3039 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7303 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 9485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3039 IncrementalHoareTripleChecker+Valid, 6444 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:47,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7303 Valid, 2497 Invalid, 9485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3039 Valid, 6444 Invalid, 2 Unknown, 0 Unchecked, 25.1s Time] [2023-11-06 23:09:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8629 states. [2023-11-06 23:09:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8629 to 7111. [2023-11-06 23:09:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7111 states, 5163 states have (on average 1.4290141390664342) internal successors, (7378), 5236 states have internal predecessors, (7378), 1657 states have call successors, (1657), 293 states have call predecessors, (1657), 290 states have return successors, (1652), 1641 states have call predecessors, (1652), 1652 states have call successors, (1652) [2023-11-06 23:09:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7111 states to 7111 states and 10687 transitions. [2023-11-06 23:09:48,538 INFO L78 Accepts]: Start accepts. Automaton has 7111 states and 10687 transitions. Word has length 64 [2023-11-06 23:09:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:48,539 INFO L495 AbstractCegarLoop]: Abstraction has 7111 states and 10687 transitions. [2023-11-06 23:09:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:09:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7111 states and 10687 transitions. [2023-11-06 23:09:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:09:48,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:48,551 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:48,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:09:48,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:48,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash -553980548, now seen corresponding path program 1 times [2023-11-06 23:09:48,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:48,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411303323] [2023-11-06 23:09:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:48,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:09:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:09:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:09:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:09:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:09:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:09:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:09:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:09:51,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411303323] [2023-11-06 23:09:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411303323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:51,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:51,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:09:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204365658] [2023-11-06 23:09:51,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:51,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:51,087 INFO L87 Difference]: Start difference. First operand 7111 states and 10687 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:09:53,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:55,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:10:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:31,249 INFO L93 Difference]: Finished difference Result 17405 states and 27355 transitions. [2023-11-06 23:10:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:10:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2023-11-06 23:10:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:31,357 INFO L225 Difference]: With dead ends: 17405 [2023-11-06 23:10:31,358 INFO L226 Difference]: Without dead ends: 10307 [2023-11-06 23:10:31,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:10:31,413 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 2987 mSDsluCounter, 7742 mSDsCounter, 0 mSdLazyCounter, 17966 mSolverCounterSat, 906 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 9399 SdHoareTripleChecker+Invalid, 18874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 17966 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:31,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3399 Valid, 9399 Invalid, 18874 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [906 Valid, 17966 Invalid, 2 Unknown, 0 Unchecked, 39.2s Time] [2023-11-06 23:10:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2023-11-06 23:10:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 7121. [2023-11-06 23:10:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7121 states, 5171 states have (on average 1.4283504157803133) internal successors, (7386), 5244 states have internal predecessors, (7386), 1657 states have call successors, (1657), 293 states have call predecessors, (1657), 292 states have return successors, (1656), 1643 states have call predecessors, (1656), 1652 states have call successors, (1656) [2023-11-06 23:10:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 10699 transitions. [2023-11-06 23:10:32,028 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 10699 transitions. Word has length 65 [2023-11-06 23:10:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:32,029 INFO L495 AbstractCegarLoop]: Abstraction has 7121 states and 10699 transitions. [2023-11-06 23:10:32,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:10:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 10699 transitions. [2023-11-06 23:10:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 23:10:32,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:32,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:32,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:10:32,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:32,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1565097798, now seen corresponding path program 1 times [2023-11-06 23:10:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:32,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804435838] [2023-11-06 23:10:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:10:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:10:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:10:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:10:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:10:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:10:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:10:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:10:33,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:33,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804435838] [2023-11-06 23:10:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804435838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:10:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401349254] [2023-11-06 23:10:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:33,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:10:33,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:10:33,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:33,900 INFO L87 Difference]: Start difference. First operand 7121 states and 10699 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:10:35,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:10:38,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:10:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:58,813 INFO L93 Difference]: Finished difference Result 24323 states and 37664 transitions. [2023-11-06 23:10:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:10:58,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2023-11-06 23:10:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:58,951 INFO L225 Difference]: With dead ends: 24323 [2023-11-06 23:10:58,952 INFO L226 Difference]: Without dead ends: 17212 [2023-11-06 23:10:59,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:10:59,009 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 7082 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 6537 mSolverCounterSat, 3020 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7559 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 9559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3020 IncrementalHoareTripleChecker+Valid, 6537 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:59,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7559 Valid, 2423 Invalid, 9559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3020 Valid, 6537 Invalid, 2 Unknown, 0 Unchecked, 23.7s Time] [2023-11-06 23:10:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states. [2023-11-06 23:11:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 14180. [2023-11-06 23:11:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14180 states, 10304 states have (on average 1.4294448757763976) internal successors, (14729), 10449 states have internal predecessors, (14729), 3297 states have call successors, (3297), 581 states have call predecessors, (3297), 578 states have return successors, (3294), 3269 states have call predecessors, (3294), 3286 states have call successors, (3294) [2023-11-06 23:11:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14180 states to 14180 states and 21320 transitions. [2023-11-06 23:11:00,215 INFO L78 Accepts]: Start accepts. Automaton has 14180 states and 21320 transitions. Word has length 65 [2023-11-06 23:11:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:00,218 INFO L495 AbstractCegarLoop]: Abstraction has 14180 states and 21320 transitions. [2023-11-06 23:11:00,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 23:11:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 14180 states and 21320 transitions. [2023-11-06 23:11:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 23:11:00,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:00,230 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:11:00,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:00,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1535685691, now seen corresponding path program 1 times [2023-11-06 23:11:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785925782] [2023-11-06 23:11:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:11:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:11:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:11:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:11:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:11:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:11:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:11:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:11:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 23:11:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 23:11:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785925782] [2023-11-06 23:11:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785925782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:11:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549599365] [2023-11-06 23:11:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:02,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:11:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:11:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:11:02,173 INFO L87 Difference]: Start difference. First operand 14180 states and 21320 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 23:11:04,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:11:06,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:11:08,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:11:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:40,749 INFO L93 Difference]: Finished difference Result 17215 states and 26968 transitions. [2023-11-06 23:11:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:11:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 76 [2023-11-06 23:11:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:40,872 INFO L225 Difference]: With dead ends: 17215 [2023-11-06 23:11:40,872 INFO L226 Difference]: Without dead ends: 17212 [2023-11-06 23:11:40,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:11:40,889 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 4760 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 10582 mSolverCounterSat, 1649 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5238 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 12234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1649 IncrementalHoareTripleChecker+Valid, 10582 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:40,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5238 Valid, 3982 Invalid, 12234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1649 Valid, 10582 Invalid, 3 Unknown, 0 Unchecked, 37.3s Time] [2023-11-06 23:11:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states. [2023-11-06 23:11:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 14184. [2023-11-06 23:11:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14184 states, 10306 states have (on average 1.4291674752571317) internal successors, (14729), 10453 states have internal predecessors, (14729), 3297 states have call successors, (3297), 581 states have call predecessors, (3297), 580 states have return successors, (3294), 3269 states have call predecessors, (3294), 3286 states have call successors, (3294) [2023-11-06 23:11:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14184 states to 14184 states and 21320 transitions. [2023-11-06 23:11:42,337 INFO L78 Accepts]: Start accepts. Automaton has 14184 states and 21320 transitions. Word has length 76 [2023-11-06 23:11:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:42,338 INFO L495 AbstractCegarLoop]: Abstraction has 14184 states and 21320 transitions. [2023-11-06 23:11:42,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 23:11:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 14184 states and 21320 transitions. [2023-11-06 23:11:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 23:11:42,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:42,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:42,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:11:42,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:42,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1934399739, now seen corresponding path program 1 times [2023-11-06 23:11:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:42,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040887611] [2023-11-06 23:11:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:11:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:11:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:11:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:11:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:11:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:11:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:11:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:11:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 23:11:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 23:11:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040887611] [2023-11-06 23:11:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040887611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899692180] [2023-11-06 23:11:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:45,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:45,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:45,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640c2a02-587e-45db-ba23-c47b554c8ad4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:11:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 4302 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 23:11:47,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:11:48,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899692180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:48,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:48,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 9 [2023-11-06 23:11:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250497108] [2023-11-06 23:11:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:48,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:11:48,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:11:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:11:48,041 INFO L87 Difference]: Start difference. First operand 14184 states and 21320 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)