./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/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_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/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_681d6e33-a79e-4e59-bbdc-8a34308927af/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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:21,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:22,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:14:22,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:22,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:22,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:22,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:22,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:22,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:22,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:22,091 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:22,091 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:22,092 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:22,092 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:22,093 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:22,094 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:22,094 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:22,095 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:22,095 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:22,096 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:22,097 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:22,101 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:22,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:22,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:22,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:22,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:22,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:22,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:22,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:22,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:22,106 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:22,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:22,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:22,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:22,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:22,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:22,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:22,108 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:22,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:22,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:22,109 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:22,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:22,110 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_681d6e33-a79e-4e59-bbdc-8a34308927af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2023-11-19 05:14:22,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:22,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:22,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:22,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:22,446 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:22,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2023-11-19 05:14:25,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:26,261 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:26,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2023-11-19 05:14:26,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/data/f81a3d791/d83100df892e4af69f0466f8d76f4a7d/FLAG55380112b [2023-11-19 05:14:26,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/data/f81a3d791/d83100df892e4af69f0466f8d76f4a7d [2023-11-19 05:14:26,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:26,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:26,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:26,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:26,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:26,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:26" (1/1) ... [2023-11-19 05:14:26,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c013d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:26, skipping insertion in model container [2023-11-19 05:14:26,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:26" (1/1) ... [2023-11-19 05:14:26,518 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:28,439 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_681d6e33-a79e-4e59-bbdc-8a34308927af/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2023-11-19 05:14:28,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:28,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:28,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3946] [2023-11-19 05:14:28,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3953] [2023-11-19 05:14:28,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3962-3963] [2023-11-19 05:14:29,128 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_681d6e33-a79e-4e59-bbdc-8a34308927af/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2023-11-19 05:14:29,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:29,227 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:29,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29 WrapperNode [2023-11-19 05:14:29,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:29,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:29,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:29,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:29,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:29,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:29,695 INFO L138 Inliner]: procedures = 191, calls = 4823, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 8234 [2023-11-19 05:14:29,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:29,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:29,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:29,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:29,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:29,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:29,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:29,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:30,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:30,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:30,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:30,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:30,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:30,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:30,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:30,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:30,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (1/1) ... [2023-11-19 05:14:30,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:30,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:30,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681d6e33-a79e-4e59-bbdc-8a34308927af/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2023-11-19 05:14:30,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2023-11-19 05:14:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:14:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2023-11-19 05:14:30,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2023-11-19 05:14:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-11-19 05:14:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-11-19 05:14:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2023-11-19 05:14:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2023-11-19 05:14:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:14:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:14:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:14:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:14:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:14:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:14:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:14:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2023-11-19 05:14:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2023-11-19 05:14:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-19 05:14:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-19 05:14:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2023-11-19 05:14:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2023-11-19 05:14:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2023-11-19 05:14:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2023-11-19 05:14:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 05:14:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 05:14:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2023-11-19 05:14:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2023-11-19 05:14:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:14:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:14:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:14:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:14:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2023-11-19 05:14:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2023-11-19 05:14:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:14:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:14:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:14:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:14:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-19 05:14:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-19 05:14:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2023-11-19 05:14:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2023-11-19 05:14:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-19 05:14:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-19 05:14:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:14:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:14:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-19 05:14:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-19 05:14:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2023-11-19 05:14:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2023-11-19 05:14:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2023-11-19 05:14:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2023-11-19 05:14:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:14:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2023-11-19 05:14:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2023-11-19 05:14:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-19 05:14:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-19 05:14:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 05:14:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 05:14:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:14:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:14:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:14:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:14:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 05:14:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 05:14:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2023-11-19 05:14:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2023-11-19 05:14:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:14:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:14:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2023-11-19 05:14:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2023-11-19 05:14:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2023-11-19 05:14:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2023-11-19 05:14:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:14:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:14:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:14:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:14:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:14:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:14:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2023-11-19 05:14:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2023-11-19 05:14:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:14:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-19 05:14:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-19 05:14:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2023-11-19 05:14:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2023-11-19 05:14:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:14:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:14:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:14:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2023-11-19 05:14:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2023-11-19 05:14:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-19 05:14:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-19 05:14:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:14:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:14:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-19 05:14:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-19 05:14:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2023-11-19 05:14:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2023-11-19 05:14:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2023-11-19 05:14:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2023-11-19 05:14:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:14:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-19 05:14:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-19 05:14:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-19 05:14:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-19 05:14:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 05:14:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 05:14:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:14:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:14:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2023-11-19 05:14:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2023-11-19 05:14:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2023-11-19 05:14:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2023-11-19 05:14:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:14:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:14:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2023-11-19 05:14:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2023-11-19 05:14:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2023-11-19 05:14:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2023-11-19 05:14:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2023-11-19 05:14:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2023-11-19 05:14:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:14:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:14:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2023-11-19 05:14:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2023-11-19 05:14:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2023-11-19 05:14:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2023-11-19 05:14:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2023-11-19 05:14:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2023-11-19 05:14:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2023-11-19 05:14:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2023-11-19 05:14:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:14:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:14:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-19 05:14:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-19 05:14:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2023-11-19 05:14:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2023-11-19 05:14:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2023-11-19 05:14:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2023-11-19 05:14:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:14:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:14:30,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:14:30,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-19 05:14:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-19 05:14:30,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-19 05:14:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-19 05:14:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2023-11-19 05:14:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2023-11-19 05:14:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:14:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:31,169 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:31,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:33,567 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:14:43,871 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:14:46,790 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:14:46,791 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:14:46,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:46 BoogieIcfgContainer [2023-11-19 05:14:46,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:14:46,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:14:46,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:14:46,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:14:46,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:26" (1/3) ... [2023-11-19 05:14:46,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f01303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:46, skipping insertion in model container [2023-11-19 05:14:46,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:29" (2/3) ... [2023-11-19 05:14:46,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f01303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:46, skipping insertion in model container [2023-11-19 05:14:46,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:46" (3/3) ... [2023-11-19 05:14:46,821 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2023-11-19 05:14:46,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:14:46,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:14:46,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:46,972 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;@46dd2e34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:46,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:14:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 1665 states, 1052 states have (on average 1.3745247148288973) internal successors, (1446), 1145 states have internal predecessors, (1446), 544 states have call successors, (544), 68 states have call predecessors, (544), 67 states have return successors, (539), 512 states have call predecessors, (539), 539 states have call successors, (539) [2023-11-19 05:14:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 05:14:47,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:47,018 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:47,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1795349185, now seen corresponding path program 1 times [2023-11-19 05:14:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:47,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619199661] [2023-11-19 05:14:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-19 05:14:50,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:50,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619199661] [2023-11-19 05:14:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619199661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:50,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:50,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111107487] [2023-11-19 05:14:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:50,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:50,539 INFO L87 Difference]: Start difference. First operand has 1665 states, 1052 states have (on average 1.3745247148288973) internal successors, (1446), 1145 states have internal predecessors, (1446), 544 states have call successors, (544), 68 states have call predecessors, (544), 67 states have return successors, (539), 512 states have call predecessors, (539), 539 states have call successors, (539) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 05:14:52,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:55,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:59,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 05:15:01,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 05:15:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:02,129 INFO L93 Difference]: Finished difference Result 3419 states and 5256 transitions. [2023-11-19 05:15:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:02,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 127 [2023-11-19 05:15:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:02,168 INFO L225 Difference]: With dead ends: 3419 [2023-11-19 05:15:02,168 INFO L226 Difference]: Without dead ends: 1766 [2023-11-19 05:15:02,187 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 05:15:02,191 INFO L413 NwaCegarLoop]: 2377 mSDtfsCounter, 189 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:02,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 4519 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 493 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2023-11-19 05:15:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-11-19 05:15:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1763. [2023-11-19 05:15:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1123 states have (on average 1.373107747105966) internal successors, (1542), 1218 states have internal predecessors, (1542), 558 states have call successors, (558), 82 states have call predecessors, (558), 81 states have return successors, (557), 524 states have call predecessors, (557), 557 states have call successors, (557) [2023-11-19 05:15:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2657 transitions. [2023-11-19 05:15:02,420 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2657 transitions. Word has length 127 [2023-11-19 05:15:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:02,421 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2657 transitions. [2023-11-19 05:15:02,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 05:15:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2657 transitions. [2023-11-19 05:15:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 05:15:02,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:02,426 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:02,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:15:02,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:15:02,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash -223080548, now seen corresponding path program 1 times [2023-11-19 05:15:02,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:02,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878725673] [2023-11-19 05:15:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-19 05:15:05,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:05,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878725673] [2023-11-19 05:15:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878725673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:05,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:05,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:15:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047298875] [2023-11-19 05:15:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:05,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:05,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:05,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:05,454 INFO L87 Difference]: Start difference. First operand 1763 states and 2657 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 05:15:07,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:15:09,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []