./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/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_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:43,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:43,357 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:08:43,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:43,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:43,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:43,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:43,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:43,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:43,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:43,408 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:43,409 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:43,410 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:43,411 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:43,411 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:43,412 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:43,413 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:43,414 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:43,415 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:43,416 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:43,416 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:43,417 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:43,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:43,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:43,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:43,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:43,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:43,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:43,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:43,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:43,425 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:43,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:43,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:43,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:43,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:43,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:43,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:43,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:43,429 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:43,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:43,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:43,430 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:43,430 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:43,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:43,431 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_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2023-11-23 21:08:43,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:43,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:43,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:43,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:43,812 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:43,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 21:08:47,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:48,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:48,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/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 [2023-11-23 21:08:48,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/data/9f5434a2a/2b06550b08f84679bf7d81974ea50461/FLAG42f48c721 [2023-11-23 21:08:48,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/data/9f5434a2a/2b06550b08f84679bf7d81974ea50461 [2023-11-23 21:08:48,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:48,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:48,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:48,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:48,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:48,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:48" (1/1) ... [2023-11-23 21:08:48,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d9adf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:48, skipping insertion in model container [2023-11-23 21:08:48,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:48" (1/1) ... [2023-11-23 21:08:48,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:51,720 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_55fb0db2-8893-45ae-8c8e-49a43fca23fc/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] [2023-11-23 21:08:51,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:51,984 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:52,182 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] [2023-11-23 21:08:52,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [2796] [2023-11-23 21:08:52,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2799] [2023-11-23 21:08:52,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2802] [2023-11-23 21:08:52,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2805] [2023-11-23 21:08:52,821 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_55fb0db2-8893-45ae-8c8e-49a43fca23fc/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] [2023-11-23 21:08:52,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:53,140 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:53,140 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:53,152 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:53,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53 WrapperNode [2023-11-23 21:08:53,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:53,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:53,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:53,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:53,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,635 INFO L138 Inliner]: procedures = 303, calls = 4051, calls flagged for inlining = 143, calls inlined = 97, statements flattened = 5348 [2023-11-23 21:08:53,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:53,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:53,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:53,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:53,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:53,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:54,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:54,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:54,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:54,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:54,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:54,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:54,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (1/1) ... [2023-11-23 21:08:54,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:54,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:54,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:54,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55fb0db2-8893-45ae-8c8e-49a43fca23fc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2023-11-23 21:08:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2023-11-23 21:08:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2023-11-23 21:08:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2023-11-23 21:08:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:08:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:08:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:08:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:08:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:08:54,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:08:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-23 21:08:54,255 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-23 21:08:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-23 21:08:54,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-23 21:08:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-23 21:08:54,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-23 21:08:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:08:54,256 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:08:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:08:54,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:08:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2023-11-23 21:08:54,258 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2023-11-23 21:08:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-23 21:08:54,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-23 21:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:08:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2023-11-23 21:08:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2023-11-23 21:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure bus_scan_store [2023-11-23 21:08:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_scan_store [2023-11-23 21:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:08:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-11-23 21:08:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-11-23 21:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2023-11-23 21:08:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2023-11-23 21:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2023-11-23 21:08:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2023-11-23 21:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-23 21:08:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-23 21:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:08:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:08:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2023-11-23 21:08:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2023-11-23 21:08:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:08:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2023-11-23 21:08:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2023-11-23 21:08:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:08:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:08:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2023-11-23 21:08:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2023-11-23 21:08:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-23 21:08:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-23 21:08:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:08:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:08:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2023-11-23 21:08:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2023-11-23 21:08:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:08:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:08:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2023-11-23 21:08:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2023-11-23 21:08:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:08:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:08:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2023-11-23 21:08:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2023-11-23 21:08:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-23 21:08:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-23 21:08:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:54,368 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 [2023-11-23 21:08:54,368 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 [2023-11-23 21:08:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2023-11-23 21:08:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2023-11-23 21:08:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:08:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:08:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-23 21:08:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-23 21:08:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:08:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:08:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:08:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:08:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:08:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:08:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:08:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:08:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:08:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2023-11-23 21:08:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2023-11-23 21:08:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2023-11-23 21:08:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2023-11-23 21:08:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2023-11-23 21:08:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2023-11-23 21:08:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2023-11-23 21:08:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2023-11-23 21:08:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-23 21:08:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-23 21:08:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2023-11-23 21:08:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2023-11-23 21:08:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:08:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:08:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2023-11-23 21:08:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2023-11-23 21:08:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:54,377 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 [2023-11-23 21:08:54,377 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 [2023-11-23 21:08:55,352 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:55,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:55,624 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:09:03,686 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:05,071 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:05,071 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:09:05,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:05 BoogieIcfgContainer [2023-11-23 21:09:05,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:05,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:05,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:05,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:05,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:48" (1/3) ... [2023-11-23 21:09:05,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1706b189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:05, skipping insertion in model container [2023-11-23 21:09:05,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:53" (2/3) ... [2023-11-23 21:09:05,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1706b189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:05, skipping insertion in model container [2023-11-23 21:09:05,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:05" (3/3) ... [2023-11-23 21:09:05,093 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-23 21:09:05,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:05,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:05,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:05,260 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;@172fec86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:05,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:05,276 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) [2023-11-23 21:09:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 21:09:05,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:05,303 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] [2023-11-23 21:09:05,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:05,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1141939169, now seen corresponding path program 1 times [2023-11-23 21:09:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958199127] [2023-11-23 21:09:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:09:07,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958199127] [2023-11-23 21:09:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958199127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:07,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295100798] [2023-11-23 21:09:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:07,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:07,584 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) [2023-11-23 21:09:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:08,895 INFO L93 Difference]: Finished difference Result 2175 states and 3155 transitions. [2023-11-23 21:09:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:08,898 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 [2023-11-23 21:09:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:08,932 INFO L225 Difference]: With dead ends: 2175 [2023-11-23 21:09:08,932 INFO L226 Difference]: Without dead ends: 1403 [2023-11-23 21:09:08,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:08,950 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 1005 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:08,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1886 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:09:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-11-23 21:09:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1400. [2023-11-23 21:09:09,175 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) [2023-11-23 21:09:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1982 transitions. [2023-11-23 21:09:09,193 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1982 transitions. Word has length 64 [2023-11-23 21:09:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:09,194 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1982 transitions. [2023-11-23 21:09:09,195 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) [2023-11-23 21:09:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1982 transitions. [2023-11-23 21:09:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 21:09:09,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:09,202 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] [2023-11-23 21:09:09,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:09,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:09,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -515750522, now seen corresponding path program 1 times [2023-11-23 21:09:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784787296] [2023-11-23 21:09:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:09:10,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784787296] [2023-11-23 21:09:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784787296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:10,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339179688] [2023-11-23 21:09:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:10,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:10,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:10,341 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) [2023-11-23 21:09:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:11,338 INFO L93 Difference]: Finished difference Result 2708 states and 3866 transitions. [2023-11-23 21:09:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:11,339 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 [2023-11-23 21:09:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:11,364 INFO L225 Difference]: With dead ends: 2708 [2023-11-23 21:09:11,364 INFO L226 Difference]: Without dead ends: 2703 [2023-11-23 21:09:11,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:11,368 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 921 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:11,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1819 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:09:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2023-11-23 21:09:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2691. [2023-11-23 21:09:11,573 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) [2023-11-23 21:09:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3841 transitions. [2023-11-23 21:09:11,600 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3841 transitions. Word has length 67 [2023-11-23 21:09:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:11,602 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 3841 transitions. [2023-11-23 21:09:11,603 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) [2023-11-23 21:09:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3841 transitions. [2023-11-23 21:09:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 21:09:11,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:11,616 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] [2023-11-23 21:09:11,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:09:11,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:11,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2139855840, now seen corresponding path program 1 times [2023-11-23 21:09:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908050026] [2023-11-23 21:09:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:09:12,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908050026] [2023-11-23 21:09:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908050026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:12,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77847170] [2023-11-23 21:09:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:12,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:12,607 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) [2023-11-23 21:09:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:13,901 INFO L93 Difference]: Finished difference Result 7953 states and 11326 transitions. [2023-11-23 21:09:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:13,903 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 [2023-11-23 21:09:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:13,955 INFO L225 Difference]: With dead ends: 7953 [2023-11-23 21:09:13,955 INFO L226 Difference]: Without dead ends: 5271 [2023-11-23 21:09:13,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:13,975 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 956 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:13,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1775 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:09:13,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2023-11-23 21:09:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5263. [2023-11-23 21:09:14,456 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) [2023-11-23 21:09:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7487 transitions. [2023-11-23 21:09:14,516 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7487 transitions. Word has length 93 [2023-11-23 21:09:14,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:14,517 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7487 transitions. [2023-11-23 21:09:14,518 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) [2023-11-23 21:09:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7487 transitions. [2023-11-23 21:09:14,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 21:09:14,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:14,523 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] [2023-11-23 21:09:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:09:14,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:14,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 168917578, now seen corresponding path program 1 times [2023-11-23 21:09:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716945291] [2023-11-23 21:09:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:09:15,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:15,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716945291] [2023-11-23 21:09:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716945291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:15,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:15,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:15,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117051298] [2023-11-23 21:09:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:15,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:15,452 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) [2023-11-23 21:09:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:16,812 INFO L93 Difference]: Finished difference Result 15323 states and 21752 transitions. [2023-11-23 21:09:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:16,813 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 [2023-11-23 21:09:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:16,897 INFO L225 Difference]: With dead ends: 15323 [2023-11-23 21:09:16,897 INFO L226 Difference]: Without dead ends: 10069 [2023-11-23 21:09:16,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:16,927 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 941 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:16,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1912 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:09:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2023-11-23 21:09:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 10059. [2023-11-23 21:09:17,564 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) [2023-11-23 21:09:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 14261 transitions. [2023-11-23 21:09:17,637 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 14261 transitions. Word has length 105 [2023-11-23 21:09:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:17,640 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 14261 transitions. [2023-11-23 21:09:17,641 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) [2023-11-23 21:09:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 14261 transitions. [2023-11-23 21:09:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 21:09:17,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:17,652 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] [2023-11-23 21:09:17,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:09:17,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:17,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1930738458, now seen corresponding path program 1 times [2023-11-23 21:09:17,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:17,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104077916] [2023-11-23 21:09:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:17,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-23 21:09:18,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104077916] [2023-11-23 21:09:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104077916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359793814] [2023-11-23 21:09:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:18,413 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) [2023-11-23 21:09:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:19,833 INFO L93 Difference]: Finished difference Result 27655 states and 39132 transitions. [2023-11-23 21:09:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:19,834 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 [2023-11-23 21:09:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:20,006 INFO L225 Difference]: With dead ends: 27655 [2023-11-23 21:09:20,006 INFO L226 Difference]: Without dead ends: 17605 [2023-11-23 21:09:20,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:20,067 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 [2023-11-23 21:09:20,070 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] [2023-11-23 21:09:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17605 states. [2023-11-23 21:09:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17605 to 17537. [2023-11-23 21:09:21,235 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) [2023-11-23 21:09:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17537 states to 17537 states and 24789 transitions. [2023-11-23 21:09:21,350 INFO L78 Accepts]: Start accepts. Automaton has 17537 states and 24789 transitions. Word has length 130 [2023-11-23 21:09:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:21,351 INFO L495 AbstractCegarLoop]: Abstraction has 17537 states and 24789 transitions. [2023-11-23 21:09:21,351 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) [2023-11-23 21:09:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 17537 states and 24789 transitions. [2023-11-23 21:09:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-23 21:09:21,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:21,364 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] [2023-11-23 21:09:21,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:09:21,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:21,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash 287109821, now seen corresponding path program 1 times [2023-11-23 21:09:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:21,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512397133] [2023-11-23 21:09:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 21:09:22,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:22,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512397133] [2023-11-23 21:09:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512397133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:22,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:22,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913597937] [2023-11-23 21:09:22,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:22,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:22,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:22,653 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) [2023-11-23 21:09:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:24,557 INFO L93 Difference]: Finished difference Result 43659 states and 61736 transitions. [2023-11-23 21:09:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:24,558 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 [2023-11-23 21:09:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:24,696 INFO L225 Difference]: With dead ends: 43659 [2023-11-23 21:09:24,696 INFO L226 Difference]: Without dead ends: 26131 [2023-11-23 21:09:24,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:24,762 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 962 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:24,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2380 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:09:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26131 states. [2023-11-23 21:09:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26131 to 26123. [2023-11-23 21:09:26,316 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) [2023-11-23 21:09:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26123 states to 26123 states and 36841 transitions. [2023-11-23 21:09:26,469 INFO L78 Accepts]: Start accepts. Automaton has 26123 states and 36841 transitions. Word has length 161 [2023-11-23 21:09:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:26,471 INFO L495 AbstractCegarLoop]: Abstraction has 26123 states and 36841 transitions. [2023-11-23 21:09:26,471 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) [2023-11-23 21:09:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 26123 states and 36841 transitions. [2023-11-23 21:09:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-23 21:09:26,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:26,492 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] [2023-11-23 21:09:26,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:09:26,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:26,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash -760216217, now seen corresponding path program 1 times [2023-11-23 21:09:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028525433] [2023-11-23 21:09:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms