./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 30e01a73 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_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.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_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:16,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:16,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:32:16,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:16,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:16,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:16,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:16,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:16,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:16,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:16,790 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:16,791 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:16,791 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:16,792 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:16,792 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:16,793 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:16,793 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:16,794 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:16,794 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:16,795 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:16,795 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:16,796 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:16,797 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:16,797 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:16,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:16,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:16,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:16,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:16,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:16,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:16,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:16,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:16,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:16,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:16,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:16,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:16,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:16,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:32:16,803 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:16,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:16,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:16,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:32:16,803 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:16,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:16,804 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2023-11-23 21:32:17,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:17,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:17,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:17,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:17,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:17,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 21:32:20,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:21,081 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:21,082 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/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 [2023-11-23 21:32:21,131 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/data/e91ba3f3c/fe2665c828d94743a9aa8cd18b318138/FLAG0d20e4a5c [2023-11-23 21:32:21,151 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/data/e91ba3f3c/fe2665c828d94743a9aa8cd18b318138 [2023-11-23 21:32:21,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:21,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:21,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:21,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:21,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:21,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:21" (1/1) ... [2023-11-23 21:32:21,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e17ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:21, skipping insertion in model container [2023-11-23 21:32:21,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:21" (1/1) ... [2023-11-23 21:32:21,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:22,721 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_47bbc06b-186f-430e-9f62-032d7595ce8f/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] [2023-11-23 21:32:23,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:23,425 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:23,513 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] [2023-11-23 21:32:23,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3358] [2023-11-23 21:32:23,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3361] [2023-11-23 21:32:23,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3364] [2023-11-23 21:32:23,519 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3367] [2023-11-23 21:32:23,546 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_47bbc06b-186f-430e-9f62-032d7595ce8f/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] [2023-11-23 21:32:23,741 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [5850] [2023-11-23 21:32:23,742 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [5855] [2023-11-23 21:32:23,743 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [5860] [2023-11-23 21:32:23,744 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [5865] [2023-11-23 21:32:23,745 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] [2023-11-23 21:32:23,746 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] [2023-11-23 21:32:23,747 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] [2023-11-23 21:32:23,747 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] [2023-11-23 21:32:23,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:23,869 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:23,870 WARN L675 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:23,870 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:23,870 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:23,879 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:23,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23 WrapperNode [2023-11-23 21:32:23,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:23,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:23,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:23,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:23,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:23,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,191 INFO L138 Inliner]: procedures = 204, calls = 2437, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 5417 [2023-11-23 21:32:24,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:24,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:24,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:24,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:24,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:24,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:24,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:24,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:24,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (1/1) ... [2023-11-23 21:32:24,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:24,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:24,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:24,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47bbc06b-186f-430e-9f62-032d7595ce8f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:32:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:32:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2023-11-23 21:32:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2023-11-23 21:32:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 21:32:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 21:32:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-23 21:32:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:32:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:32:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:32:24,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:32:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-11-23 21:32:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-11-23 21:32:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2023-11-23 21:32:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2023-11-23 21:32:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 21:32:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 21:32:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:32:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:32:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2023-11-23 21:32:24,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2023-11-23 21:32:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-11-23 21:32:24,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-11-23 21:32:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 21:32:24,660 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 21:32:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2023-11-23 21:32:24,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2023-11-23 21:32:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:32:24,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:32:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:32:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:32:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2023-11-23 21:32:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2023-11-23 21:32:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:32:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:32:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2023-11-23 21:32:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2023-11-23 21:32:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:32:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:32:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2023-11-23 21:32:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2023-11-23 21:32:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-23 21:32:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-23 21:32:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2023-11-23 21:32:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2023-11-23 21:32:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2023-11-23 21:32:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2023-11-23 21:32:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2023-11-23 21:32:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2023-11-23 21:32:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-23 21:32:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-23 21:32:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:32:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:32:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:32:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2023-11-23 21:32:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2023-11-23 21:32:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2023-11-23 21:32:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2023-11-23 21:32:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2023-11-23 21:32:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2023-11-23 21:32:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-23 21:32:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-23 21:32:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:32:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:32:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2023-11-23 21:32:24,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2023-11-23 21:32:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:32:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2023-11-23 21:32:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2023-11-23 21:32:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-23 21:32:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-23 21:32:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 21:32:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 21:32:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:32:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:32:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:32:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:32:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2023-11-23 21:32:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2023-11-23 21:32:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-23 21:32:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-23 21:32:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:32:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:32:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_reg [2023-11-23 21:32:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_reg [2023-11-23 21:32:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:32:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:32:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:32:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:32:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:32:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:32:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:32:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:32:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-11-23 21:32:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-11-23 21:32:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:32:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:32:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-23 21:32:24,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-23 21:32:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:32:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:32:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:32:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 21:32:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 21:32:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:32:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:32:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-23 21:32:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-23 21:32:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2023-11-23 21:32:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2023-11-23 21:32:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:32:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:32:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:32:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:32:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2023-11-23 21:32:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2023-11-23 21:32:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2023-11-23 21:32:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2023-11-23 21:32:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:32:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:32:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:32:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 21:32:24,686 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 21:32:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_der [2023-11-23 21:32:24,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_der [2023-11-23 21:32:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2023-11-23 21:32:24,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2023-11-23 21:32:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2023-11-23 21:32:24,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2023-11-23 21:32:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:32:24,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:32:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:32:24,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:32:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-23 21:32:24,695 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-23 21:32:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2023-11-23 21:32:24,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2023-11-23 21:32:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-23 21:32:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2023-11-23 21:32:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2023-11-23 21:32:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2023-11-23 21:32:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2023-11-23 21:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2023-11-23 21:32:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2023-11-23 21:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:32:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:32:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:32:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-23 21:32:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-23 21:32:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:32:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:32:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2023-11-23 21:32:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2023-11-23 21:32:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2023-11-23 21:32:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2023-11-23 21:32:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:32:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:32:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2023-11-23 21:32:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2023-11-23 21:32:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 21:32:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 21:32:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2023-11-23 21:32:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2023-11-23 21:32:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:32:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2023-11-23 21:32:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2023-11-23 21:32:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-23 21:32:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-23 21:32:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:25,524 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:25,529 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:25,807 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:32:34,587 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:37,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:37,618 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:32:37,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:37 BoogieIcfgContainer [2023-11-23 21:32:37,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:37,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:37,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:37,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:37,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:21" (1/3) ... [2023-11-23 21:32:37,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f68c93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:37, skipping insertion in model container [2023-11-23 21:32:37,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:23" (2/3) ... [2023-11-23 21:32:37,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f68c93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:37, skipping insertion in model container [2023-11-23 21:32:37,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:37" (3/3) ... [2023-11-23 21:32:37,634 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-23 21:32:37,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:37,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:32:37,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:37,788 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71b854cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:37,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:32:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 1485 states, 960 states have (on average 1.4) internal successors, (1344), 989 states have internal predecessors, (1344), 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) [2023-11-23 21:32:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 21:32:37,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:37,823 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] [2023-11-23 21:32:37,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:32:37,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:37,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1829950833, now seen corresponding path program 1 times [2023-11-23 21:32:37,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:37,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844346517] [2023-11-23 21:32:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 21:32:40,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844346517] [2023-11-23 21:32:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844346517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:40,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665495982] [2023-11-23 21:32:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:40,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:40,778 INFO L87 Difference]: Start difference. First operand has 1485 states, 960 states have (on average 1.4) internal successors, (1344), 989 states have internal predecessors, (1344), 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-23 21:32:42,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:44,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:49,329 INFO L93 Difference]: Finished difference Result 4311 states and 6591 transitions. [2023-11-23 21:32:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 41 [2023-11-23 21:32:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:49,378 INFO L225 Difference]: With dead ends: 4311 [2023-11-23 21:32:49,378 INFO L226 Difference]: Without dead ends: 2823 [2023-11-23 21:32:49,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:49,400 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 2103 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:49,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 4050 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2023-11-23 21:32:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2023-11-23 21:32:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2819. [2023-11-23 21:32:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 1835 states have (on average 1.3940054495912806) internal successors, (2558), 1873 states have internal predecessors, (2558), 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) [2023-11-23 21:32:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4225 transitions. [2023-11-23 21:32:49,719 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4225 transitions. Word has length 41 [2023-11-23 21:32:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:49,720 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4225 transitions. [2023-11-23 21:32:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-23 21:32:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4225 transitions. [2023-11-23 21:32:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:32:49,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:49,741 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] [2023-11-23 21:32:49,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:32:49,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:32:49,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash -530778971, now seen corresponding path program 1 times [2023-11-23 21:32:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:49,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691969061] [2023-11-23 21:32:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:49,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 21:32:51,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691969061] [2023-11-23 21:32:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691969061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:51,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101585120] [2023-11-23 21:32:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:51,621 INFO L87 Difference]: Start difference. First operand 2819 states and 4225 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:32:53,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:57,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-23 21:33:00,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:00,809 INFO L93 Difference]: Finished difference Result 5604 states and 8404 transitions. [2023-11-23 21:33:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 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 58 [2023-11-23 21:33:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:00,869 INFO L225 Difference]: With dead ends: 5604 [2023-11-23 21:33:00,869 INFO L226 Difference]: Without dead ends: 5595 [2023-11-23 21:33:00,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:00,878 INFO L413 NwaCegarLoop]: 2070 mSDtfsCounter, 2131 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 4063 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:00,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 4063 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 277 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2023-11-23 21:33:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2023-11-23 21:33:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5593. [2023-11-23 21:33:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 3647 states have (on average 1.3942966822045517) internal successors, (5085), 3719 states have internal predecessors, (5085), 1655 states have call successors, (1655), 293 states have call predecessors, (1655), 290 states have return successors, (1650), 1640 states have call predecessors, (1650), 1650 states have call successors, (1650) [2023-11-23 21:33:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 8390 transitions. [2023-11-23 21:33:01,261 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 8390 transitions. Word has length 58 [2023-11-23 21:33:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:01,262 INFO L495 AbstractCegarLoop]: Abstraction has 5593 states and 8390 transitions. [2023-11-23 21:33:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:33:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 8390 transitions. [2023-11-23 21:33:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 21:33:01,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:01,393 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] [2023-11-23 21:33:01,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:33:01,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:33:01,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash 724954094, now seen corresponding path program 1 times [2023-11-23 21:33:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:33:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110965469] [2023-11-23 21:33:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 21:33:04,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:33:04,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110965469] [2023-11-23 21:33:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110965469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:04,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:04,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:33:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279420166] [2023-11-23 21:33:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:04,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:33:04,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:33:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:33:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:33:04,657 INFO L87 Difference]: Start difference. First operand 5593 states and 8390 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:33:06,749 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 []