./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:47,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:47,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:36:47,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:47,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:47,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:47,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:47,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:47,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:47,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:47,793 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:47,794 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:47,795 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:47,796 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:47,797 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:47,797 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:47,798 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:47,798 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:47,799 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:47,799 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:47,800 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:47,800 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:47,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:47,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:47,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:47,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:47,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:47,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:47,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:47,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:47,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:47,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:47,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:47,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:47,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:47,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:47,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:47,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:47,808 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:47,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:47,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:47,809 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:47,809 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:47,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:47,810 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_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2023-11-23 20:36:48,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:48,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:48,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:48,190 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:48,190 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:48,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 20:36:51,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:52,718 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:52,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 20:36:52,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/data/7758146bc/6e99a172effb4535b665c0470dd40b71/FLAG2a13b4953 [2023-11-23 20:36:52,793 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/data/7758146bc/6e99a172effb4535b665c0470dd40b71 [2023-11-23 20:36:52,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:52,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:52,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:52,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:52,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:52,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:52" (1/1) ... [2023-11-23 20:36:52,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194be3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:52, skipping insertion in model container [2023-11-23 20:36:52,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:52" (1/1) ... [2023-11-23 20:36:52,987 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:54,978 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_b2284cb9-0735-4064-b937-194447b1714b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2023-11-23 20:36:55,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:55,087 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:55,296 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)); [3317-3318] [2023-11-23 20:36:55,301 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3355] [2023-11-23 20:36:55,301 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3358] [2023-11-23 20:36:55,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3361] [2023-11-23 20:36:55,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3364] [2023-11-23 20:36:55,687 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [5603] [2023-11-23 20:36:55,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [5608] [2023-11-23 20:36:55,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [5613] [2023-11-23 20:36:55,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [5618] [2023-11-23 20:36:55,691 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___0), "+m" (*__ptr___3): "0" (__x___0): "memory"); [5652] [2023-11-23 20:36:55,692 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___0), "+m" (*__ptr___4): "0" (__x___0): "memory"); [5657] [2023-11-23 20:36:55,693 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___0), "+m" (*__ptr___5): "0" (__x___0): "memory"); [5662] [2023-11-23 20:36:55,694 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___0), "+m" (*__ptr___6): "0" (__x___0): "memory"); [5667] [2023-11-23 20:36:55,752 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_b2284cb9-0735-4064-b937-194447b1714b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2023-11-23 20:36:55,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:55,856 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:55,856 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:55,856 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:55,867 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:36:55,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55 WrapperNode [2023-11-23 20:36:55,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:55,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:55,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:36:55,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:36:55,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:55,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,190 INFO L138 Inliner]: procedures = 187, calls = 2503, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 5244 [2023-11-23 20:36:56,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:56,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:36:56,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:36:56,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:36:56,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:36:56,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:36:56,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:36:56,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:36:56,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:56,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:36:56,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:36:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:36:56,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:36:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:36:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2023-11-23 20:36:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2023-11-23 20:36:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 20:36:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 20:36:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-23 20:36:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:36:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:36:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:36:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:36:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:36:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:36:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:36:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-11-23 20:36:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-11-23 20:36:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2023-11-23 20:36:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2023-11-23 20:36:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_serial_deregister [2023-11-23 20:36:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_serial_deregister [2023-11-23 20:36:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-23 20:36:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-23 20:36:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2023-11-23 20:36:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2023-11-23 20:36:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 20:36:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 20:36:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 20:36:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 20:36:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:36:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:36:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 20:36:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 20:36:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2023-11-23 20:36:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2023-11-23 20:36:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2023-11-23 20:36:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2023-11-23 20:36:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-11-23 20:36:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-11-23 20:36:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2023-11-23 20:36:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2023-11-23 20:36:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:36:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:36:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 20:36:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 20:36:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2023-11-23 20:36:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2023-11-23 20:36:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:36:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:36:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:36:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 20:36:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 20:36:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2023-11-23 20:36:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2023-11-23 20:36:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2023-11-23 20:36:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2023-11-23 20:36:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:36:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:36:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 20:36:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 20:36:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2023-11-23 20:36:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2023-11-23 20:36:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:36:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:36:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2023-11-23 20:36:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2023-11-23 20:36:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-23 20:36:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-23 20:36:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2023-11-23 20:36:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2023-11-23 20:36:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:36:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:36:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:36:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:36:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2023-11-23 20:36:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2023-11-23 20:36:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-23 20:36:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-23 20:36:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2023-11-23 20:36:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2023-11-23 20:36:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2023-11-23 20:36:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2023-11-23 20:36:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:36:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2023-11-23 20:36:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2023-11-23 20:36:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-23 20:36:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-23 20:36:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:36:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:36:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:36:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:36:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2023-11-23 20:36:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2023-11-23 20:36:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:36:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2023-11-23 20:36:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2023-11-23 20:36:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 20:36:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 20:36:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:36:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:36:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:36:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 20:36:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2023-11-23 20:36:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2023-11-23 20:36:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2023-11-23 20:36:56,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2023-11-23 20:36:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2023-11-23 20:36:56,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2023-11-23 20:36:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 20:36:56,689 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 20:36:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2023-11-23 20:36:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2023-11-23 20:36:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:36:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 20:36:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 20:36:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 20:36:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 20:36:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-23 20:36:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-23 20:36:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:36:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:36:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2023-11-23 20:36:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2023-11-23 20:36:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:36:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2023-11-23 20:36:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2023-11-23 20:36:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:36:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2023-11-23 20:36:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2023-11-23 20:36:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 20:36:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 20:36:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:36:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:36:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:36:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:36:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2023-11-23 20:36:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2023-11-23 20:36:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:36:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:36:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 20:36:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 20:36:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 20:36:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 20:36:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2023-11-23 20:36:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2023-11-23 20:36:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 20:36:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 20:36:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:36:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:36:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 20:36:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 20:36:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2023-11-23 20:36:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2023-11-23 20:36:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-11-23 20:36:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-11-23 20:36:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 20:36:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 20:36:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2023-11-23 20:36:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2023-11-23 20:36:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:36:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:36:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:36:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-23 20:36:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-23 20:36:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2023-11-23 20:36:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2023-11-23 20:36:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-23 20:36:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-23 20:36:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:36:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 20:36:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 20:36:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:36:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:36:57,521 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:36:57,525 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:36:58,187 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:37:07,611 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:10,252 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:10,253 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:37:10,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:10 BoogieIcfgContainer [2023-11-23 20:37:10,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:10,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:10,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:10,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:10,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:52" (1/3) ... [2023-11-23 20:37:10,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29470221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:10, skipping insertion in model container [2023-11-23 20:37:10,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:55" (2/3) ... [2023-11-23 20:37:10,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29470221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:10, skipping insertion in model container [2023-11-23 20:37:10,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:10" (3/3) ... [2023-11-23 20:37:10,269 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 20:37:10,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:10,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:37:10,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:10,433 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;@9ff4a7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:10,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:37:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 1476 states, 952 states have (on average 1.3918067226890756) internal successors, (1325), 976 states have internal predecessors, (1325), 446 states have call successors, (446), 77 states have call predecessors, (446), 76 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-11-23 20:37:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 20:37:10,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:10,478 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:10,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:10,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1272365946, now seen corresponding path program 1 times [2023-11-23 20:37:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153401790] [2023-11-23 20:37:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:10,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2023-11-23 20:37:14,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153401790] [2023-11-23 20:37:14,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153401790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:14,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:14,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592132562] [2023-11-23 20:37:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:14,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:14,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:14,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:14,115 INFO L87 Difference]: Start difference. First operand has 1476 states, 952 states have (on average 1.3918067226890756) internal successors, (1325), 976 states have internal predecessors, (1325), 446 states have call successors, (446), 77 states have call predecessors, (446), 76 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 20:37:16,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:18,317 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 [] [2023-11-23 20:37:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:22,693 INFO L93 Difference]: Finished difference Result 4281 states and 6451 transitions. [2023-11-23 20:37:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:22,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 178 [2023-11-23 20:37:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:22,749 INFO L225 Difference]: With dead ends: 4281 [2023-11-23 20:37:22,749 INFO L226 Difference]: Without dead ends: 2828 [2023-11-23 20:37:22,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:22,771 INFO L413 NwaCegarLoop]: 2069 mSDtfsCounter, 2098 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:22,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 4090 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 281 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2023-11-23 20:37:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2023-11-23 20:37:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2826. [2023-11-23 20:37:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 1837 states have (on average 1.3908546543277083) internal successors, (2555), 1872 states have internal predecessors, (2555), 841 states have call successors, (841), 147 states have call predecessors, (841), 147 states have return successors, (840), 836 states have call predecessors, (840), 840 states have call successors, (840) [2023-11-23 20:37:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4236 transitions. [2023-11-23 20:37:23,111 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4236 transitions. Word has length 178 [2023-11-23 20:37:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:23,115 INFO L495 AbstractCegarLoop]: Abstraction has 2826 states and 4236 transitions. [2023-11-23 20:37:23,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 20:37:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4236 transitions. [2023-11-23 20:37:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-23 20:37:23,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:23,141 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 20:37:23,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:37:23,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:23,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash 462771441, now seen corresponding path program 1 times [2023-11-23 20:37:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080945111] [2023-11-23 20:37:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-11-23 20:37:25,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:25,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080945111] [2023-11-23 20:37:25,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080945111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:25,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:25,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742241966] [2023-11-23 20:37:25,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:25,419 INFO L87 Difference]: Start difference. First operand 2826 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 20:37:27,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:31,579 INFO L93 Difference]: Finished difference Result 5605 states and 8410 transitions. [2023-11-23 20:37:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:31,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2023-11-23 20:37:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:31,632 INFO L225 Difference]: With dead ends: 5605 [2023-11-23 20:37:31,632 INFO L226 Difference]: Without dead ends: 5597 [2023-11-23 20:37:31,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:31,640 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 2136 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:31,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 4243 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 20:37:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2023-11-23 20:37:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2023-11-23 20:37:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 3645 states have (on average 1.3928669410150891) internal successors, (5077), 3714 states have internal predecessors, (5077), 1661 states have call successors, (1661), 292 states have call predecessors, (1661), 290 states have return successors, (1660), 1650 states have call predecessors, (1660), 1660 states have call successors, (1660) [2023-11-23 20:37:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 8398 transitions. [2023-11-23 20:37:32,089 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 8398 transitions. Word has length 194 [2023-11-23 20:37:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:32,090 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 8398 transitions. [2023-11-23 20:37:32,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 20:37:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 8398 transitions. [2023-11-23 20:37:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-23 20:37:32,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:32,100 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 20:37:32,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:37:32,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:32,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:32,101 INFO L85 PathProgramCache]: Analyzing trace with hash -665374956, now seen corresponding path program 1 times [2023-11-23 20:37:32,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:32,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323209892] [2023-11-23 20:37:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:32,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-11-23 20:37:35,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323209892] [2023-11-23 20:37:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323209892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:37:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120170297] [2023-11-23 20:37:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:35,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:35,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:37:35,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2284cb9-0735-4064-b937-194447b1714b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process