./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ --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 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:30,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:30,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:18:30,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:30,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:30,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:30,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:30,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:30,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:30,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:30,641 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:30,642 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:30,643 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:30,643 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:18:30,644 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:30,644 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:30,645 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:18:30,645 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:18:30,646 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:30,647 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:18:30,647 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:18:30,648 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:18:30,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:30,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:18:30,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:30,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:30,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:18:30,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:30,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:18:30,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:18:30,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:30,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:30,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:30,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:30,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:30,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:30,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:18:30,657 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:18:30,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:18:30,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:18:30,659 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:30,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:30,660 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_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2023-11-19 05:18:30,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:30,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:30,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:30,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:30,961 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:30,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-19 05:18:34,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:34,860 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:34,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-19 05:18:34,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/data/8f314e35b/f62934393eca4073baf9ce7e661b691e/FLAG4a46973af [2023-11-19 05:18:34,937 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/data/8f314e35b/f62934393eca4073baf9ce7e661b691e [2023-11-19 05:18:34,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:34,944 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:34,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:34,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:34,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:34,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:34" (1/1) ... [2023-11-19 05:18:34,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a0456d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:34, skipping insertion in model container [2023-11-19 05:18:34,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:34" (1/1) ... [2023-11-19 05:18:35,131 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:36,612 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_64824b29-1275-43a7-b419-596102d04c81/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2023-11-19 05:18:36,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:36,702 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:18:36,824 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)); [3951-3952] [2023-11-19 05:18:36,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [4068] [2023-11-19 05:18:36,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4071] [2023-11-19 05:18:36,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4074] [2023-11-19 05:18:36,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4077] [2023-11-19 05:18:36,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [4102] [2023-11-19 05:18:36,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4105] [2023-11-19 05:18:36,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4108] [2023-11-19 05:18:36,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4111] [2023-11-19 05:18:37,210 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_64824b29-1275-43a7-b419-596102d04c81/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2023-11-19 05:18:37,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:37,265 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:37,274 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:18:37,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37 WrapperNode [2023-11-19 05:18:37,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:37,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:37,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:18:37,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:18:37,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,512 INFO L138 Inliner]: procedures = 180, calls = 1525, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 4243 [2023-11-19 05:18:37,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:37,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:18:37,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:18:37,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:18:37,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:18:37,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:18:37,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:18:37,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:18:37,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (1/1) ... [2023-11-19 05:18:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:37,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:18:37,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64824b29-1275-43a7-b419-596102d04c81/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:18:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:18:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:18:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2023-11-19 05:18:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2023-11-19 05:18:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:18:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2023-11-19 05:18:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2023-11-19 05:18:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:18:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:18:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2023-11-19 05:18:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2023-11-19 05:18:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:18:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:18:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:18:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:18:37,967 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:18:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2023-11-19 05:18:37,968 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2023-11-19 05:18:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2023-11-19 05:18:37,968 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2023-11-19 05:18:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:18:37,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:18:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:18:37,969 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:18:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 05:18:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 05:18:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2023-11-19 05:18:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2023-11-19 05:18:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:18:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:18:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-11-19 05:18:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-11-19 05:18:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2023-11-19 05:18:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2023-11-19 05:18:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:18:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:18:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:18:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:18:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-19 05:18:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-19 05:18:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:18:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:18:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-19 05:18:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-19 05:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2023-11-19 05:18:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2023-11-19 05:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:18:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:18:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:18:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2023-11-19 05:18:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2023-11-19 05:18:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:18:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:18:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2023-11-19 05:18:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2023-11-19 05:18:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2023-11-19 05:18:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2023-11-19 05:18:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2023-11-19 05:18:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2023-11-19 05:18:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2023-11-19 05:18:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2023-11-19 05:18:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:18:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:18:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:18:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:18:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2023-11-19 05:18:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2023-11-19 05:18:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2023-11-19 05:18:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2023-11-19 05:18:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2023-11-19 05:18:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2023-11-19 05:18:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:18:37,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:18:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:18:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:18:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:18:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2023-11-19 05:18:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2023-11-19 05:18:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2023-11-19 05:18:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2023-11-19 05:18:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:18:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2023-11-19 05:18:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2023-11-19 05:18:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:18:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:18:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2023-11-19 05:18:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2023-11-19 05:18:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:18:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2023-11-19 05:18:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2023-11-19 05:18:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2023-11-19 05:18:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2023-11-19 05:18:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:18:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 05:18:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 05:18:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2023-11-19 05:18:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2023-11-19 05:18:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 05:18:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 05:18:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-19 05:18:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-19 05:18:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:18:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:18:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:18:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2023-11-19 05:18:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2023-11-19 05:18:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:18:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-19 05:18:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-19 05:18:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2023-11-19 05:18:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2023-11-19 05:18:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:18:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:18:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2023-11-19 05:18:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2023-11-19 05:18:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:18:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:18:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:18:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:18:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-19 05:18:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-19 05:18:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 05:18:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 05:18:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-19 05:18:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-19 05:18:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2023-11-19 05:18:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2023-11-19 05:18:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 05:18:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 05:18:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2023-11-19 05:18:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2023-11-19 05:18:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:18:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-19 05:18:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-19 05:18:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-11-19 05:18:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-11-19 05:18:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:18:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-19 05:18:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-19 05:18:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:18:38,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:18:38,592 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:18:38,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:18:38,998 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:18:52,319 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:18:54,544 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:18:54,544 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:18:54,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:54 BoogieIcfgContainer [2023-11-19 05:18:54,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:18:54,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:18:54,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:18:54,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:18:54,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:34" (1/3) ... [2023-11-19 05:18:54,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ee7267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:54, skipping insertion in model container [2023-11-19 05:18:54,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:37" (2/3) ... [2023-11-19 05:18:54,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ee7267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:54, skipping insertion in model container [2023-11-19 05:18:54,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:54" (3/3) ... [2023-11-19 05:18:54,566 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-19 05:18:54,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:18:54,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:18:54,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:18:54,672 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;@161c16c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:18:54,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:18:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 710 states have (on average 1.3901408450704225) internal successors, (987), 742 states have internal predecessors, (987), 363 states have call successors, (363), 63 states have call predecessors, (363), 62 states have return successors, (358), 351 states have call predecessors, (358), 358 states have call successors, (358) [2023-11-19 05:18:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 05:18:54,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:54,705 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:54,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:18:54,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1873188647, now seen corresponding path program 1 times [2023-11-19 05:18:54,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:54,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969843373] [2023-11-19 05:18:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:54,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-19 05:18:56,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969843373] [2023-11-19 05:18:56,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969843373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036958345] [2023-11-19 05:18:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:56,221 INFO L87 Difference]: Start difference. First operand has 1137 states, 710 states have (on average 1.3901408450704225) internal successors, (987), 742 states have internal predecessors, (987), 363 states have call successors, (363), 63 states have call predecessors, (363), 62 states have return successors, (358), 351 states have call predecessors, (358), 358 states have call successors, (358) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 05:18:58,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:00,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:03,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:05,858 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 [] [2023-11-19 05:19:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:06,335 INFO L93 Difference]: Finished difference Result 3146 states and 4834 transitions. [2023-11-19 05:19:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-11-19 05:19:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:06,371 INFO L225 Difference]: With dead ends: 3146 [2023-11-19 05:19:06,371 INFO L226 Difference]: Without dead ends: 2024 [2023-11-19 05:19:06,385 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 [2023-11-19 05:19:06,389 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1358 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:06,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2982 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 383 Invalid, 4 Unknown, 0 Unchecked, 9.8s Time] [2023-11-19 05:19:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2023-11-19 05:19:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2023-11-19 05:19:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1258 states have (on average 1.3656597774244834) internal successors, (1718), 1309 states have internal predecessors, (1718), 641 states have call successors, (641), 121 states have call predecessors, (641), 120 states have return successors, (640), 625 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-19 05:19:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2999 transitions. [2023-11-19 05:19:06,605 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2999 transitions. Word has length 114 [2023-11-19 05:19:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:06,607 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2999 transitions. [2023-11-19 05:19:06,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 05:19:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2999 transitions. [2023-11-19 05:19:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 05:19:06,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:06,618 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:06,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:19:06,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:19:06,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2022200803, now seen corresponding path program 1 times [2023-11-19 05:19:06,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:06,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183555701] [2023-11-19 05:19:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:06,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-19 05:19:07,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183555701] [2023-11-19 05:19:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183555701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:07,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:07,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:19:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708320238] [2023-11-19 05:19:07,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:07,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:07,498 INFO L87 Difference]: Start difference. First operand 2020 states and 2999 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 05:19:09,535 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 [] [2023-11-19 05:19:12,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:14,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:16,484 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 [] [2023-11-19 05:19:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:18,625 INFO L93 Difference]: Finished difference Result 4973 states and 7358 transitions. [2023-11-19 05:19:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:18,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-11-19 05:19:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:18,656 INFO L225 Difference]: With dead ends: 4973 [2023-11-19 05:19:18,657 INFO L226 Difference]: Without dead ends: 2983 [2023-11-19 05:19:18,670 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 [2023-11-19 05:19:18,672 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 1359 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:18,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 4112 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 459 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2023-11-19 05:19:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2023-11-19 05:19:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2980. [2023-11-19 05:19:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 1859 states have (on average 1.3625605164066703) internal successors, (2533), 1935 states have internal predecessors, (2533), 933 states have call successors, (933), 188 states have call predecessors, (933), 187 states have return successors, (932), 910 states have call predecessors, (932), 932 states have call successors, (932) [2023-11-19 05:19:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4398 transitions. [2023-11-19 05:19:18,874 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4398 transitions. Word has length 114 [2023-11-19 05:19:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:18,875 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4398 transitions. [2023-11-19 05:19:18,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 05:19:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4398 transitions. [2023-11-19 05:19:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-19 05:19:18,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:18,887 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:19:18,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:19:18,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2082062476, now seen corresponding path program 1 times [2023-11-19 05:19:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767718180] [2023-11-19 05:19:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2023-11-19 05:19:20,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767718180] [2023-11-19 05:19:20,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767718180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:20,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:19:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446514377] [2023-11-19 05:19:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:20,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:20,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:20,121 INFO L87 Difference]: Start difference. First operand 2980 states and 4398 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 05:19:22,159 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 [] [2023-11-19 05:19:24,165 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 []