./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:11:24,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:11:24,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:11:24,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:11:24,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:11:24,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:11:24,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:11:24,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:11:24,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:11:24,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:11:24,238 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:11:24,239 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:11:24,240 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:11:24,242 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:11:24,242 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:11:24,243 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:11:24,243 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:11:24,244 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:11:24,244 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:11:24,245 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:11:24,245 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:11:24,246 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:11:24,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:11:24,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:11:24,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:11:24,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:11:24,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:11:24,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:11:24,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:11:24,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:11:24,251 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:11:24,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:11:24,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:11:24,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:24,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:11:24,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:11:24,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:11:24,254 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:11:24,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:11:24,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:11:24,254 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:11:24,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:11:24,255 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_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2023-11-19 05:11:24,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:11:24,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:11:24,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:11:24,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:11:24,566 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:11:24,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:11:27,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:11:28,229 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:11:28,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:11:28,269 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/data/9e94268e4/d867f1e1cb5d40a1b817fc7e910bfab9/FLAG317a1736c [2023-11-19 05:11:28,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/data/9e94268e4/d867f1e1cb5d40a1b817fc7e910bfab9 [2023-11-19 05:11:28,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:11:28,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:11:28,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:28,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:11:28,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:11:28,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:28" (1/1) ... [2023-11-19 05:11:28,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f329ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:28, skipping insertion in model container [2023-11-19 05:11:28,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:28" (1/1) ... [2023-11-19 05:11:28,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:11:29,746 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_77c238c3-6847-4f6b-a0c3-711551c95221/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2023-11-19 05:11:29,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:29,870 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:11:29,952 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)); [2769-2770] [2023-11-19 05:11:29,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2796] [2023-11-19 05:11:29,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2799] [2023-11-19 05:11:29,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2802] [2023-11-19 05:11:29,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2805] [2023-11-19 05:11:30,038 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3649] [2023-11-19 05:11:30,040 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3671] [2023-11-19 05:11:30,158 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_77c238c3-6847-4f6b-a0c3-711551c95221/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2023-11-19 05:11:30,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:30,334 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:11:30,335 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:11:30,343 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:11:30,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30 WrapperNode [2023-11-19 05:11:30,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:30,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:30,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:11:30,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:11:30,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,583 INFO L138 Inliner]: procedures = 189, calls = 1332, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 3507 [2023-11-19 05:11:30,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:30,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:11:30,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:11:30,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:11:30,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:11:30,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:11:30,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:11:30,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:11:30,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:30,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:30,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:11:30,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c238c3-6847-4f6b-a0c3-711551c95221/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:11:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-19 05:11:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-19 05:11:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 05:11:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 05:11:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-19 05:11:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-19 05:11:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-19 05:11:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-19 05:11:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:11:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:11:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:11:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:11:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:11:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:11:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:11:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:11:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-19 05:11:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-19 05:11:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-19 05:11:30,937 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-19 05:11:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:11:30,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:11:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-19 05:11:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-19 05:11:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-19 05:11:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-19 05:11:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:11:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:11:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:11:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:11:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-19 05:11:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-19 05:11:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-19 05:11:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-19 05:11:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 05:11:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 05:11:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-19 05:11:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-19 05:11:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-19 05:11:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-19 05:11:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-19 05:11:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-19 05:11:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:11:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:11:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:11:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:11:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:11:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-19 05:11:30,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-19 05:11:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-19 05:11:30,945 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-19 05:11:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-19 05:11:30,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-19 05:11:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:11:30,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:11:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:11:30,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:11:30,948 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-19 05:11:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-19 05:11:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:11:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:11:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:11:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:11:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-11-19 05:11:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-11-19 05:11:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:11:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 05:11:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-19 05:11:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-19 05:11:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:11:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:11:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:11:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:11:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-19 05:11:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-19 05:11:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 05:11:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 05:11:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:11:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-19 05:11:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-19 05:11:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-19 05:11:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-19 05:11:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:11:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:11:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:11:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:11:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:11:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:11:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:11:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-19 05:11:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-19 05:11:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-19 05:11:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-19 05:11:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:11:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-19 05:11:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-19 05:11:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-19 05:11:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-19 05:11:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 05:11:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 05:11:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 05:11:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 05:11:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:11:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:11:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-19 05:11:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-19 05:11:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:11:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:11:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 05:11:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 05:11:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-19 05:11:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-19 05:11:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:11:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:11:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 05:11:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 05:11:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-19 05:11:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-19 05:11:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:11:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:11:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:11:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:11:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:11:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:11:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-19 05:11:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-19 05:11:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 05:11:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 05:11:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-19 05:11:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-19 05:11:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:11:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:11:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:11:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:11:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-19 05:11:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-19 05:11:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-19 05:11:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-19 05:11:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:11:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:11:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:11:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:11:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-19 05:11:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-19 05:11:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-19 05:11:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-19 05:11:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-19 05:11:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-19 05:11:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:11:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-19 05:11:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-19 05:11:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:11:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-19 05:11:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-19 05:11:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:11:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:11:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:11:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:11:31,704 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:11:31,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:11:32,016 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:11:54,447 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:11:55,748 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:11:55,748 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:11:55,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:55 BoogieIcfgContainer [2023-11-19 05:11:55,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:11:55,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:11:55,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:11:55,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:11:55,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:11:28" (1/3) ... [2023-11-19 05:11:55,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42764749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:55, skipping insertion in model container [2023-11-19 05:11:55,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (2/3) ... [2023-11-19 05:11:55,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42764749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:55, skipping insertion in model container [2023-11-19 05:11:55,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:55" (3/3) ... [2023-11-19 05:11:55,773 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:11:55,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:11:55,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:11:55,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:11:55,947 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;@195c906d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:11:55,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:11:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 1081 states, 646 states have (on average 1.3606811145510835) internal successors, (879), 689 states have internal predecessors, (879), 364 states have call successors, (364), 70 states have call predecessors, (364), 69 states have return successors, (359), 356 states have call predecessors, (359), 359 states have call successors, (359) [2023-11-19 05:11:55,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 05:11:55,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:55,976 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-19 05:11:55,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:55,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash 559983013, now seen corresponding path program 1 times [2023-11-19 05:11:55,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:55,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272531738] [2023-11-19 05:11:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:55,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:11:58,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272531738] [2023-11-19 05:11:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272531738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:58,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:58,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651031406] [2023-11-19 05:11:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:58,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:58,588 INFO L87 Difference]: Start difference. First operand has 1081 states, 646 states have (on average 1.3606811145510835) internal successors, (879), 689 states have internal predecessors, (879), 364 states have call successors, (364), 70 states have call predecessors, (364), 69 states have return successors, (359), 356 states have call predecessors, (359), 359 states have call successors, (359) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 05:12:00,664 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 [] [2023-11-19 05:12:02,698 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 [] [2023-11-19 05:12:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:04,821 INFO L93 Difference]: Finished difference Result 3102 states and 4603 transitions. [2023-11-19 05:12:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2023-11-19 05:12:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:04,879 INFO L225 Difference]: With dead ends: 3102 [2023-11-19 05:12:04,879 INFO L226 Difference]: Without dead ends: 2035 [2023-11-19 05:12:04,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:04,900 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 1501 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:04,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2785 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 325 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-11-19 05:12:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-11-19 05:12:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2029. [2023-11-19 05:12:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1224 states have (on average 1.3529411764705883) internal successors, (1656), 1284 states have internal predecessors, (1656), 671 states have call successors, (671), 134 states have call predecessors, (671), 133 states have return successors, (658), 652 states have call predecessors, (658), 658 states have call successors, (658) [2023-11-19 05:12:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2985 transitions. [2023-11-19 05:12:05,276 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2985 transitions. Word has length 135 [2023-11-19 05:12:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:05,280 INFO L495 AbstractCegarLoop]: Abstraction has 2029 states and 2985 transitions. [2023-11-19 05:12:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 05:12:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2985 transitions. [2023-11-19 05:12:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 05:12:05,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:05,297 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-19 05:12:05,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:12:05,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:05,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1247933359, now seen corresponding path program 1 times [2023-11-19 05:12:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144489431] [2023-11-19 05:12:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:12:06,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144489431] [2023-11-19 05:12:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144489431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:06,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443625279] [2023-11-19 05:12:06,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:06,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:06,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:06,961 INFO L87 Difference]: Start difference. First operand 2029 states and 2985 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 05:12:09,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:10,884 INFO L93 Difference]: Finished difference Result 3996 states and 5885 transitions. [2023-11-19 05:12:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:10,890 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), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2023-11-19 05:12:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:10,927 INFO L225 Difference]: With dead ends: 3996 [2023-11-19 05:12:10,927 INFO L226 Difference]: Without dead ends: 3971 [2023-11-19 05:12:10,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:10,931 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 1520 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:10,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 2740 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 05:12:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2023-11-19 05:12:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3967. [2023-11-19 05:12:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 2400 states have (on average 1.3516666666666666) internal successors, (3244), 2508 states have internal predecessors, (3244), 1307 states have call successors, (1307), 262 states have call predecessors, (1307), 259 states have return successors, (1295), 1280 states have call predecessors, (1295), 1295 states have call successors, (1295) [2023-11-19 05:12:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5846 transitions. [2023-11-19 05:12:11,223 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5846 transitions. Word has length 135 [2023-11-19 05:12:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:11,230 INFO L495 AbstractCegarLoop]: Abstraction has 3967 states and 5846 transitions. [2023-11-19 05:12:11,231 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), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 05:12:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5846 transitions. [2023-11-19 05:12:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-19 05:12:11,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:11,237 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-19 05:12:11,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:12:11,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:11,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash 30291888, now seen corresponding path program 1 times [2023-11-19 05:12:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245598801] [2023-11-19 05:12:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:12:12,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245598801] [2023-11-19 05:12:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245598801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:12,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:12,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:12,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431491210] [2023-11-19 05:12:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:12,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:12,830 INFO L87 Difference]: Start difference. First operand 3967 states and 5846 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 05:12:14,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:17,235 INFO L93 Difference]: Finished difference Result 11809 states and 17422 transitions. [2023-11-19 05:12:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:17,236 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), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-11-19 05:12:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:17,311 INFO L225 Difference]: With dead ends: 11809 [2023-11-19 05:12:17,312 INFO L226 Difference]: Without dead ends: 7869 [2023-11-19 05:12:17,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:17,340 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 1521 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:17,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 3007 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 335 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-11-19 05:12:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2023-11-19 05:12:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7858. [2023-11-19 05:12:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 4761 states have (on average 1.3526570048309179) internal successors, (6440), 4969 states have internal predecessors, (6440), 2585 states have call successors, (2585), 516 states have call predecessors, (2585), 511 states have return successors, (2567), 2540 states have call predecessors, (2567), 2567 states have call successors, (2567) [2023-11-19 05:12:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 11592 transitions. [2023-11-19 05:12:17,951 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 11592 transitions. Word has length 136 [2023-11-19 05:12:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:17,952 INFO L495 AbstractCegarLoop]: Abstraction has 7858 states and 11592 transitions. [2023-11-19 05:12:17,953 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), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 05:12:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 11592 transitions. [2023-11-19 05:12:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 05:12:17,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:17,958 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:12:17,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 263868440, now seen corresponding path program 1 times [2023-11-19 05:12:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370391677] [2023-11-19 05:12:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms