./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-08_1a-drivers--rapidio--rapidio.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_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/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_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/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_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:38,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:39,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:21:39,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:39,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:39,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:39,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:39,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:39,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:39,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:39,089 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:39,091 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:39,091 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:39,093 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:39,094 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:39,094 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:39,095 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:39,095 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:39,096 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:39,097 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:39,097 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:39,098 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:39,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:39,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:39,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:39,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:39,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:39,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:39,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:39,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:39,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:39,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:39,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:39,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:39,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:39,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:39,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:39,105 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:39,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:39,106 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:39,106 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:39,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:39,107 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_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2023-11-19 05:21:39,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:39,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:39,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:39,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:39,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:39,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-19 05:21:42,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:43,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:43,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-19 05:21:43,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/data/f22907b95/fd3b39adaa6a4c6f93ba7f8063166cc8/FLAG7b4d2e897 [2023-11-19 05:21:43,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/data/f22907b95/fd3b39adaa6a4c6f93ba7f8063166cc8 [2023-11-19 05:21:43,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:43,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:43,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:43,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:43,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:43,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:43" (1/1) ... [2023-11-19 05:21:43,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e365c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:43, skipping insertion in model container [2023-11-19 05:21:43,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:43" (1/1) ... [2023-11-19 05:21:43,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:46,031 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_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2023-11-19 05:21:46,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:46,236 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:46,359 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 %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [2752] [2023-11-19 05:21:46,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [2796] [2023-11-19 05:21:46,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2799] [2023-11-19 05:21:46,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2802] [2023-11-19 05:21:46,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2805] [2023-11-19 05:21:46,782 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_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2023-11-19 05:21:46,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:46,996 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:21:46,997 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:21:47,004 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:47,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47 WrapperNode [2023-11-19 05:21:47,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:47,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:47,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:47,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:47,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,420 INFO L138 Inliner]: procedures = 303, calls = 4051, calls flagged for inlining = 143, calls inlined = 97, statements flattened = 5348 [2023-11-19 05:21:47,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:47,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:47,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:47,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:47,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:47,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:47,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:47,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:47,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (1/1) ... [2023-11-19 05:21:47,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:47,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:47,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726aef16-0f66-4fae-9d69-16dc5d6ee7ab/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2023-11-19 05:21:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2023-11-19 05:21:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2023-11-19 05:21:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2023-11-19 05:21:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:21:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:21:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:21:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:21:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:21:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:21:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-19 05:21:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-19 05:21:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-19 05:21:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-19 05:21:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-19 05:21:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-19 05:21:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:21:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:21:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:21:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:21:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2023-11-19 05:21:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2023-11-19 05:21:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-19 05:21:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-19 05:21:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:21:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:21:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2023-11-19 05:21:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2023-11-19 05:21:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:21:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:21:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure bus_scan_store [2023-11-19 05:21:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_scan_store [2023-11-19 05:21:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:21:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:21:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-11-19 05:21:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-11-19 05:21:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2023-11-19 05:21:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2023-11-19 05:21:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:21:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:21:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2023-11-19 05:21:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2023-11-19 05:21:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:21:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-19 05:21:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-19 05:21:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:21:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:21:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2023-11-19 05:21:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2023-11-19 05:21:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:21:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:21:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2023-11-19 05:21:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2023-11-19 05:21:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:21:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:21:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2023-11-19 05:21:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2023-11-19 05:21:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-19 05:21:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-19 05:21:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:21:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:21:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2023-11-19 05:21:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2023-11-19 05:21:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:21:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:21:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2023-11-19 05:21:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2023-11-19 05:21:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 05:21:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 05:21:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2023-11-19 05:21:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2023-11-19 05:21:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-19 05:21:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-19 05:21:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:21:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2023-11-19 05:21:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2023-11-19 05:21:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2023-11-19 05:21:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2023-11-19 05:21:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:21:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:21:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:21:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 05:21:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 05:21:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:21:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:21:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:21:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:21:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:21:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:21:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:21:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:21:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:21:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2023-11-19 05:21:47,940 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2023-11-19 05:21:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2023-11-19 05:21:47,940 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2023-11-19 05:21:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2023-11-19 05:21:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2023-11-19 05:21:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2023-11-19 05:21:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2023-11-19 05:21:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-19 05:21:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-19 05:21:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2023-11-19 05:21:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2023-11-19 05:21:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 05:21:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 05:21:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2023-11-19 05:21:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2023-11-19 05:21:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:21:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:47,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2023-11-19 05:21:47,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2023-11-19 05:21:48,654 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:48,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:48,890 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:21:54,757 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:56,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:56,272 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:21:56,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:56 BoogieIcfgContainer [2023-11-19 05:21:56,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:56,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:56,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:56,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:56,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:43" (1/3) ... [2023-11-19 05:21:56,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee1bdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:56, skipping insertion in model container [2023-11-19 05:21:56,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:47" (2/3) ... [2023-11-19 05:21:56,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee1bdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:56, skipping insertion in model container [2023-11-19 05:21:56,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:56" (3/3) ... [2023-11-19 05:21:56,298 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-19 05:21:56,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:56,323 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:21:56,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:56,418 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;@522d69ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:56,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:21:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 737 states, 484 states have (on average 1.3884297520661157) internal successors, (672), 516 states have internal predecessors, (672), 202 states have call successors, (202), 50 states have call predecessors, (202), 49 states have return successors, (182), 181 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 05:21:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:21:56,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:56,448 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 05:21:56,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:56,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1821218289, now seen corresponding path program 1 times [2023-11-19 05:21:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625292128] [2023-11-19 05:21:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 05:21:58,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625292128] [2023-11-19 05:21:58,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625292128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:58,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:58,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592128224] [2023-11-19 05:21:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:58,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:58,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:58,208 INFO L87 Difference]: Start difference. First operand has 737 states, 484 states have (on average 1.3884297520661157) internal successors, (672), 516 states have internal predecessors, (672), 202 states have call successors, (202), 50 states have call predecessors, (202), 49 states have return successors, (182), 181 states have call predecessors, (182), 182 states have call successors, (182) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 05:21:59,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:59,311 INFO L93 Difference]: Finished difference Result 2175 states and 3155 transitions. [2023-11-19 05:21:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:59,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2023-11-19 05:21:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:59,338 INFO L225 Difference]: With dead ends: 2175 [2023-11-19 05:21:59,338 INFO L226 Difference]: Without dead ends: 1403 [2023-11-19 05:21:59,347 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 05:21:59,350 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 1005 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:59,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1886 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:21:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-11-19 05:21:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1400. [2023-11-19 05:21:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 950 states have (on average 1.345263157894737) internal successors, (1278), 969 states have internal predecessors, (1278), 353 states have call successors, (353), 97 states have call predecessors, (353), 96 states have return successors, (351), 349 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-19 05:21:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1982 transitions. [2023-11-19 05:21:59,514 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1982 transitions. Word has length 64 [2023-11-19 05:21:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:59,515 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1982 transitions. [2023-11-19 05:21:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 05:21:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1982 transitions. [2023-11-19 05:21:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:59,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:59,527 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 05:21:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:21:59,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:59,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1154448447, now seen corresponding path program 1 times [2023-11-19 05:21:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938574051] [2023-11-19 05:21:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 05:22:00,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:00,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938574051] [2023-11-19 05:22:00,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938574051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:00,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:00,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812034247] [2023-11-19 05:22:00,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:00,350 INFO L87 Difference]: Start difference. First operand 1400 states and 1982 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 05:22:01,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:01,204 INFO L93 Difference]: Finished difference Result 2708 states and 3866 transitions. [2023-11-19 05:22:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:01,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2023-11-19 05:22:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:01,226 INFO L225 Difference]: With dead ends: 2708 [2023-11-19 05:22:01,227 INFO L226 Difference]: Without dead ends: 2703 [2023-11-19 05:22:01,229 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 05:22:01,230 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 921 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:01,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1821 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:22:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2023-11-19 05:22:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2691. [2023-11-19 05:22:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 1830 states have (on average 1.3502732240437159) internal successors, (2471), 1875 states have internal predecessors, (2471), 676 states have call successors, (676), 187 states have call predecessors, (676), 184 states have return successors, (694), 660 states have call predecessors, (694), 674 states have call successors, (694) [2023-11-19 05:22:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3841 transitions. [2023-11-19 05:22:01,473 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3841 transitions. Word has length 67 [2023-11-19 05:22:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:01,475 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 3841 transitions. [2023-11-19 05:22:01,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 05:22:01,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3841 transitions. [2023-11-19 05:22:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 05:22:01,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:01,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:01,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:22:01,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:01,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash -97448130, now seen corresponding path program 1 times [2023-11-19 05:22:01,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:01,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026015913] [2023-11-19 05:22:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 05:22:02,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:02,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026015913] [2023-11-19 05:22:02,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026015913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:02,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277000204] [2023-11-19 05:22:02,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:02,161 INFO L87 Difference]: Start difference. First operand 2691 states and 3841 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:22:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:03,051 INFO L93 Difference]: Finished difference Result 7953 states and 11326 transitions. [2023-11-19 05:22:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2023-11-19 05:22:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:03,091 INFO L225 Difference]: With dead ends: 7953 [2023-11-19 05:22:03,092 INFO L226 Difference]: Without dead ends: 5271 [2023-11-19 05:22:03,106 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 05:22:03,110 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 956 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:03,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1775 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:22:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2023-11-19 05:22:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5263. [2023-11-19 05:22:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 3574 states have (on average 1.3461108002238389) internal successors, (4811), 3665 states have internal predecessors, (4811), 1320 states have call successors, (1320), 373 states have call predecessors, (1320), 368 states have return successors, (1356), 1288 states have call predecessors, (1356), 1318 states have call successors, (1356) [2023-11-19 05:22:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7487 transitions. [2023-11-19 05:22:03,567 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7487 transitions. Word has length 93 [2023-11-19 05:22:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:03,568 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7487 transitions. [2023-11-19 05:22:03,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:22:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7487 transitions. [2023-11-19 05:22:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 05:22:03,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:03,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:03,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:22:03,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:03,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash 103498984, now seen corresponding path program 1 times [2023-11-19 05:22:03,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:03,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540201287] [2023-11-19 05:22:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 05:22:04,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:04,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540201287] [2023-11-19 05:22:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540201287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:04,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:04,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193467262] [2023-11-19 05:22:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:04,157 INFO L87 Difference]: Start difference. First operand 5263 states and 7487 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:22:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:05,331 INFO L93 Difference]: Finished difference Result 15323 states and 21752 transitions. [2023-11-19 05:22:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 105 [2023-11-19 05:22:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:05,422 INFO L225 Difference]: With dead ends: 15323 [2023-11-19 05:22:05,422 INFO L226 Difference]: Without dead ends: 10069 [2023-11-19 05:22:05,449 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 05:22:05,453 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 941 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:05,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1912 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:22:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2023-11-19 05:22:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 10059. [2023-11-19 05:22:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10059 states, 6818 states have (on average 1.339835728952772) internal successors, (9135), 6989 states have internal predecessors, (9135), 2528 states have call successors, (2528), 721 states have call predecessors, (2528), 712 states have return successors, (2598), 2468 states have call predecessors, (2598), 2526 states have call successors, (2598) [2023-11-19 05:22:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 14261 transitions. [2023-11-19 05:22:06,395 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 14261 transitions. Word has length 105 [2023-11-19 05:22:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:06,398 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 14261 transitions. [2023-11-19 05:22:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 05:22:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 14261 transitions. [2023-11-19 05:22:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 05:22:06,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:06,410 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:06,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:22:06,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash -97771825, now seen corresponding path program 1 times [2023-11-19 05:22:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869201685] [2023-11-19 05:22:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 05:22:07,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869201685] [2023-11-19 05:22:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869201685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:07,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:07,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540482156] [2023-11-19 05:22:07,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:07,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:07,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:07,095 INFO L87 Difference]: Start difference. First operand 10059 states and 14261 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:08,448 INFO L93 Difference]: Finished difference Result 27655 states and 39132 transitions. [2023-11-19 05:22:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:08,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2023-11-19 05:22:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:08,579 INFO L225 Difference]: With dead ends: 27655 [2023-11-19 05:22:08,580 INFO L226 Difference]: Without dead ends: 17605 [2023-11-19 05:22:08,630 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 05:22:08,631 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 753 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:08,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1979 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:22:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17605 states. [2023-11-19 05:22:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17605 to 17537. [2023-11-19 05:22:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17537 states, 12056 states have (on average 1.3393331121433312) internal successors, (16147), 12265 states have internal predecessors, (16147), 4282 states have call successors, (4282), 1207 states have call predecessors, (4282), 1198 states have return successors, (4360), 4208 states have call predecessors, (4360), 4280 states have call successors, (4360) [2023-11-19 05:22:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17537 states to 17537 states and 24789 transitions. [2023-11-19 05:22:09,975 INFO L78 Accepts]: Start accepts. Automaton has 17537 states and 24789 transitions. Word has length 130 [2023-11-19 05:22:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:09,977 INFO L495 AbstractCegarLoop]: Abstraction has 17537 states and 24789 transitions. [2023-11-19 05:22:09,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 17537 states and 24789 transitions. [2023-11-19 05:22:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-19 05:22:09,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:09,991 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:09,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:22:09,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:09,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1216990293, now seen corresponding path program 1 times [2023-11-19 05:22:09,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:09,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327142227] [2023-11-19 05:22:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:09,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-19 05:22:11,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327142227] [2023-11-19 05:22:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327142227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:11,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341086127] [2023-11-19 05:22:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:11,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:11,078 INFO L87 Difference]: Start difference. First operand 17537 states and 24789 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 05:22:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:13,310 INFO L93 Difference]: Finished difference Result 43659 states and 61736 transitions. [2023-11-19 05:22:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 161 [2023-11-19 05:22:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:13,435 INFO L225 Difference]: With dead ends: 43659 [2023-11-19 05:22:13,436 INFO L226 Difference]: Without dead ends: 26131 [2023-11-19 05:22:13,503 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 05:22:13,504 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 962 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:13,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2380 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:22:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26131 states. [2023-11-19 05:22:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26131 to 26123. [2023-11-19 05:22:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26123 states, 18018 states have (on average 1.3368298368298368) internal successors, (24087), 18321 states have internal predecessors, (24087), 6320 states have call successors, (6320), 1797 states have call predecessors, (6320), 1784 states have return successors, (6434), 6212 states have call predecessors, (6434), 6318 states have call successors, (6434) [2023-11-19 05:22:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26123 states to 26123 states and 36841 transitions. [2023-11-19 05:22:15,654 INFO L78 Accepts]: Start accepts. Automaton has 26123 states and 36841 transitions. Word has length 161 [2023-11-19 05:22:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:15,656 INFO L495 AbstractCegarLoop]: Abstraction has 26123 states and 36841 transitions. [2023-11-19 05:22:15,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 05:22:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26123 states and 36841 transitions. [2023-11-19 05:22:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-19 05:22:15,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:15,674 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:15,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:22:15,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:15,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -22794795, now seen corresponding path program 1 times [2023-11-19 05:22:15,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:15,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533955703] [2023-11-19 05:22:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-19 05:22:16,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:16,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533955703] [2023-11-19 05:22:16,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533955703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:16,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:16,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:16,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777097776] [2023-11-19 05:22:16,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:16,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:16,519 INFO L87 Difference]: Start difference. First operand 26123 states and 36841 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 05:22:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:18,884 INFO L93 Difference]: Finished difference Result 64883 states and 91550 transitions. [2023-11-19 05:22:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 173 [2023-11-19 05:22:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:19,066 INFO L225 Difference]: With dead ends: 64883 [2023-11-19 05:22:19,067 INFO L226 Difference]: Without dead ends: 38769 [2023-11-19 05:22:19,148 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 05:22:19,149 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 948 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:19,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2367 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:22:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38769 states. [2023-11-19 05:22:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38769 to 38751. [2023-11-19 05:22:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38751 states, 26822 states have (on average 1.3342405488032212) internal successors, (35787), 27255 states have internal predecessors, (35787), 9292 states have call successors, (9292), 2655 states have call predecessors, (9292), 2636 states have return successors, (9458), 9136 states have call predecessors, (9458), 9290 states have call successors, (9458) [2023-11-19 05:22:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38751 states to 38751 states and 54537 transitions. [2023-11-19 05:22:22,136 INFO L78 Accepts]: Start accepts. Automaton has 38751 states and 54537 transitions. Word has length 173 [2023-11-19 05:22:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:22,137 INFO L495 AbstractCegarLoop]: Abstraction has 38751 states and 54537 transitions. [2023-11-19 05:22:22,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-19 05:22:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 38751 states and 54537 transitions. [2023-11-19 05:22:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 05:22:22,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:22,160 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:22:22,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:22,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1042959524, now seen corresponding path program 1 times [2023-11-19 05:22:22,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:22,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704838784] [2023-11-19 05:22:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:22,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms