./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 527bcce2 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_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/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_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5 --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-527bcce [2023-11-21 19:54:09,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:54:09,466 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:54:09,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:54:09,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:54:09,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:54:09,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:54:09,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:54:09,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:54:09,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:54:09,522 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:54:09,524 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:54:09,524 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:54:09,526 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:54:09,526 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:54:09,527 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:54:09,527 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:54:09,528 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:54:09,528 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:54:09,529 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:54:09,529 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:54:09,530 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:54:09,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:54:09,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:54:09,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:54:09,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:54:09,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:54:09,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:54:09,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:54:09,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:54:09,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:54:09,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:54:09,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:54:09,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:54:09,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:09,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:54:09,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:54:09,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:54:09,538 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:54:09,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:54:09,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:54:09,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:54:09,540 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:54:09,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:54:09,540 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_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2023-11-21 19:54:09,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:54:09,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:54:09,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:54:09,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:54:09,931 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:54:09,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/../../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 [2023-11-21 19:54:13,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:54:13,769 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:54:13,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/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 [2023-11-21 19:54:13,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/data/ed8b7b734/574f8cdbfcaa481ca0c2de32a77094fc/FLAG40cf5e9d5 [2023-11-21 19:54:13,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/data/ed8b7b734/574f8cdbfcaa481ca0c2de32a77094fc [2023-11-21 19:54:13,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:54:13,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:54:13,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:13,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:54:13,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:54:13,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9243e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13, skipping insertion in model container [2023-11-21 19:54:13,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:14,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:54:15,550 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_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/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] [2023-11-21 19:54:15,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:15,670 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:54:15,842 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] [2023-11-21 19:54:15,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [4068] [2023-11-21 19:54:15,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4071] [2023-11-21 19:54:15,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4074] [2023-11-21 19:54:15,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4077] [2023-11-21 19:54:15,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [4102] [2023-11-21 19:54:15,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4105] [2023-11-21 19:54:15,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4108] [2023-11-21 19:54:15,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4111] [2023-11-21 19:54:16,080 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_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/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] [2023-11-21 19:54:16,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:16,168 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:54:16,176 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:54:16,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16 WrapperNode [2023-11-21 19:54:16,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:16,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:16,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:54:16,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:54:16,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,502 INFO L138 Inliner]: procedures = 180, calls = 1525, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 4243 [2023-11-21 19:54:16,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:16,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:54:16,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:54:16,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:54:16,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:54:16,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:54:16,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:54:16,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:54:16,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (1/1) ... [2023-11-21 19:54:16,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:16,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:54:16,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:54:16,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2f2b43-18e0-430a-bc1a-c9a5ffa75033/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:54:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-21 19:54:16,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-21 19:54:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2023-11-21 19:54:16,923 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2023-11-21 19:54:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:54:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2023-11-21 19:54:16,924 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2023-11-21 19:54:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:54:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:54:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2023-11-21 19:54:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2023-11-21 19:54:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 19:54:16,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 19:54:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:54:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 19:54:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 19:54:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2023-11-21 19:54:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2023-11-21 19:54:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2023-11-21 19:54:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2023-11-21 19:54:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-21 19:54:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-21 19:54:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-21 19:54:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-21 19:54:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-21 19:54:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-21 19:54:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2023-11-21 19:54:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2023-11-21 19:54:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:54:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:54:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-11-21 19:54:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-11-21 19:54:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2023-11-21 19:54:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2023-11-21 19:54:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-21 19:54:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-21 19:54:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-21 19:54:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-21 19:54:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-21 19:54:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-21 19:54:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 19:54:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 19:54:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-21 19:54:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-21 19:54:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2023-11-21 19:54:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2023-11-21 19:54:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:54:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 19:54:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 19:54:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-21 19:54:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-21 19:54:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2023-11-21 19:54:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2023-11-21 19:54:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 19:54:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 19:54:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2023-11-21 19:54:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2023-11-21 19:54:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2023-11-21 19:54:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2023-11-21 19:54:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2023-11-21 19:54:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2023-11-21 19:54:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2023-11-21 19:54:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2023-11-21 19:54:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-21 19:54:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-21 19:54:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:54:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:54:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2023-11-21 19:54:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2023-11-21 19:54:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2023-11-21 19:54:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2023-11-21 19:54:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2023-11-21 19:54:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2023-11-21 19:54:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:54:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-21 19:54:16,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-21 19:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 19:54:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 19:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2023-11-21 19:54:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2023-11-21 19:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2023-11-21 19:54:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2023-11-21 19:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2023-11-21 19:54:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2023-11-21 19:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2023-11-21 19:54:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2023-11-21 19:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-21 19:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2023-11-21 19:54:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2023-11-21 19:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2023-11-21 19:54:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2023-11-21 19:54:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:54:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-21 19:54:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-21 19:54:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2023-11-21 19:54:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2023-11-21 19:54:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-21 19:54:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-21 19:54:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-21 19:54:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-21 19:54:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:54:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:54:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:54:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2023-11-21 19:54:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2023-11-21 19:54:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:54:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-21 19:54:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-21 19:54:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2023-11-21 19:54:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2023-11-21 19:54:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:54:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:54:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2023-11-21 19:54:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2023-11-21 19:54:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 19:54:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 19:54:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-21 19:54:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-21 19:54:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-21 19:54:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-21 19:54:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 19:54:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 19:54:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-21 19:54:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-21 19:54:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2023-11-21 19:54:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2023-11-21 19:54:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 19:54:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 19:54:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2023-11-21 19:54:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2023-11-21 19:54:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:54:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-21 19:54:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-21 19:54:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-11-21 19:54:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-11-21 19:54:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:54:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-21 19:54:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-21 19:54:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:54:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:54:17,731 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:54:17,739 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:54:18,273 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 19:54:31,356 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:54:33,596 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:54:33,597 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:54:33,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:33 BoogieIcfgContainer [2023-11-21 19:54:33,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:54:33,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:54:33,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:54:33,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:54:33,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:54:13" (1/3) ... [2023-11-21 19:54:33,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b6ac67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:33, skipping insertion in model container [2023-11-21 19:54:33,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:16" (2/3) ... [2023-11-21 19:54:33,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b6ac67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:33, skipping insertion in model container [2023-11-21 19:54:33,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:33" (3/3) ... [2023-11-21 19:54:33,612 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-21 19:54:33,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:54:33,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:54:33,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:54:33,742 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;@500a4c8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:54:33,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:54:33,756 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) [2023-11-21 19:54:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-21 19:54:33,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:33,798 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] [2023-11-21 19:54:33,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:54:33,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1161667541, now seen corresponding path program 1 times [2023-11-21 19:54:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:33,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330239970] [2023-11-21 19:54:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-21 19:54:35,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:35,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330239970] [2023-11-21 19:54:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330239970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:35,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:54:35,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747176220] [2023-11-21 19:54:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:35,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:35,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:35,305 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) [2023-11-21 19:54:37,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:54:39,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:54:43,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:54:45,106 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 [] [2023-11-21 19:54:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:45,635 INFO L93 Difference]: Finished difference Result 3146 states and 4834 transitions. [2023-11-21 19:54:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:45,639 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 [2023-11-21 19:54:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:45,683 INFO L225 Difference]: With dead ends: 3146 [2023-11-21 19:54:45,683 INFO L226 Difference]: Without dead ends: 2024 [2023-11-21 19:54:45,699 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 [2023-11-21 19:54:45,703 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1358 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s 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, 10.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:45,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2982 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 383 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2023-11-21 19:54:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2023-11-21 19:54:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2023-11-21 19:54:45,931 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) [2023-11-21 19:54:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2999 transitions. [2023-11-21 19:54:45,955 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2999 transitions. Word has length 114 [2023-11-21 19:54:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:45,956 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2999 transitions. [2023-11-21 19:54:45,957 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) [2023-11-21 19:54:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2999 transitions. [2023-11-21 19:54:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-21 19:54:45,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:45,963 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] [2023-11-21 19:54:45,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:54:45,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:54:45,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 762089695, now seen corresponding path program 1 times [2023-11-21 19:54:45,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117617942] [2023-11-21 19:54:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-21 19:54:46,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:46,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117617942] [2023-11-21 19:54:46,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117617942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:46,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:54:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348084747] [2023-11-21 19:54:46,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:46,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:46,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:46,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:46,864 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) [2023-11-21 19:54:48,903 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 [] [2023-11-21 19:54:51,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:54:53,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:54:55,742 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 [] [2023-11-21 19:54:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:57,560 INFO L93 Difference]: Finished difference Result 4973 states and 7358 transitions. [2023-11-21 19:54:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:57,561 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 [2023-11-21 19:54:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:57,586 INFO L225 Difference]: With dead ends: 4973 [2023-11-21 19:54:57,586 INFO L226 Difference]: Without dead ends: 2983 [2023-11-21 19:54:57,597 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 [2023-11-21 19:54:57,599 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 1359 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s 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, 10.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:57,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 4112 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 459 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2023-11-21 19:54:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2023-11-21 19:54:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2980. [2023-11-21 19:54:57,765 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) [2023-11-21 19:54:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4398 transitions. [2023-11-21 19:54:57,793 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4398 transitions. Word has length 114 [2023-11-21 19:54:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4398 transitions. [2023-11-21 19:54:57,795 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) [2023-11-21 19:54:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4398 transitions. [2023-11-21 19:54:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-21 19:54:57,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:57,809 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] [2023-11-21 19:54:57,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:54:57,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:54:57,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1464640011, now seen corresponding path program 1 times [2023-11-21 19:54:57,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163052621] [2023-11-21 19:54:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2023-11-21 19:54:58,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:58,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163052621] [2023-11-21 19:54:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163052621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:58,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:54:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78877756] [2023-11-21 19:54:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:58,901 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) [2023-11-21 19:55:00,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:55:02,947 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 []