./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-32_7a-drivers--hid--hid-roccat-pyra.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/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_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/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_990249a3-d5af-4d93-a71e-ba5eac33b0e0/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 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:08,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:08,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:08:08,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:08,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:08,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:08,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:08,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:08,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:08,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:08,303 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:08,304 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:08,305 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:08,307 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:08,308 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:08,308 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:08,309 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:08,309 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:08,310 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:08,310 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:08,311 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:08,311 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:08,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:08,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:08,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:08,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:08,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:08,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:08,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:08,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:08,318 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:08,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:08,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:08,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:08,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:08,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:08,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:08,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:08,321 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:08,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:08,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:08,322 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:08,322 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:08,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:08,323 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_990249a3-d5af-4d93-a71e-ba5eac33b0e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 [2023-11-23 21:08:08,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:08,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:08,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:08,714 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:08,715 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:08,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2023-11-23 21:08:11,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:12,409 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:12,410 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2023-11-23 21:08:12,460 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/data/d7faea8a5/109999c7ef794962b5b633a32849569e/FLAG8b4dcf4e3 [2023-11-23 21:08:12,478 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/data/d7faea8a5/109999c7ef794962b5b633a32849569e [2023-11-23 21:08:12,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:12,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:12,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:12,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:12,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:12,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:12" (1/1) ... [2023-11-23 21:08:12,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4be63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:12, skipping insertion in model container [2023-11-23 21:08:12,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:12" (1/1) ... [2023-11-23 21:08:12,638 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:14,083 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_990249a3-d5af-4d93-a71e-ba5eac33b0e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2023-11-23 21:08:14,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:14,340 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:14,678 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_990249a3-d5af-4d93-a71e-ba5eac33b0e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2023-11-23 21:08:14,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:14,833 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:14,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14 WrapperNode [2023-11-23 21:08:14,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:14,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:14,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:14,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:14,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:14,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,126 INFO L138 Inliner]: procedures = 205, calls = 1205, calls flagged for inlining = 96, calls inlined = 92, statements flattened = 3434 [2023-11-23 21:08:15,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:15,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:15,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:15,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:15,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:15,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:15,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:15,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:15,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (1/1) ... [2023-11-23 21:08:15,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:15,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:15,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:15,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990249a3-d5af-4d93-a71e-ba5eac33b0e0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_receive [2023-11-23 21:08:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_receive [2023-11-23 21:08:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:08:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:08:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure hid_set_drvdata [2023-11-23 21:08:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_set_drvdata [2023-11-23 21:08:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:08:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_stop [2023-11-23 21:08:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_stop [2023-11-23 21:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:08:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:08:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_report_event [2023-11-23 21:08:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_report_event [2023-11-23 21:08:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure hid_get_drvdata [2023-11-23 21:08:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_get_drvdata [2023-11-23 21:08:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:08:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:08:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:08:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:08:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:08:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:08:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read_profilex_settings [2023-11-23 21:08:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read_profilex_settings [2023-11-23 21:08:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure profile_activated [2023-11-23 21:08:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure profile_activated [2023-11-23 21:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:08:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_send_control [2023-11-23 21:08:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_send_control [2023-11-23 21:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read_profilex_buttons [2023-11-23 21:08:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read_profilex_buttons [2023-11-23 21:08:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:08:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:08:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:08:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:08:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pyra_lock_of_pyra_device [2023-11-23 21:08:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pyra_lock_of_pyra_device [2023-11-23 21:08:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_show_actual_profile [2023-11-23 21:08:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_show_actual_profile [2023-11-23 21:08:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read [2023-11-23 21:08:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read [2023-11-23 21:08:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:08:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:08:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-23 21:08:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-23 21:08:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:08:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:08:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:08:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:08:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:08:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:08:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_raw_event [2023-11-23 21:08:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_raw_event [2023-11-23 21:08:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:08:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:08:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pyra_lock_of_pyra_device [2023-11-23 21:08:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pyra_lock_of_pyra_device [2023-11-23 21:08:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_remove [2023-11-23 21:08:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_remove [2023-11-23 21:08:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_send_with_status [2023-11-23 21:08:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_send_with_status [2023-11-23 21:08:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-23 21:08:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-23 21:08:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_write [2023-11-23 21:08:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_write [2023-11-23 21:08:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:08:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:08:16,164 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:16,168 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:16,531 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:08:19,556 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:20,282 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:20,282 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:08:20,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:20 BoogieIcfgContainer [2023-11-23 21:08:20,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:20,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:20,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:20,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:20,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:12" (1/3) ... [2023-11-23 21:08:20,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6085b5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:20, skipping insertion in model container [2023-11-23 21:08:20,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:14" (2/3) ... [2023-11-23 21:08:20,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6085b5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:20, skipping insertion in model container [2023-11-23 21:08:20,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:20" (3/3) ... [2023-11-23 21:08:20,299 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2023-11-23 21:08:20,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:20,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:20,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:20,450 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;@fa3721b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:20,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 786 states, 491 states have (on average 1.4032586558044806) internal successors, (689), 526 states have internal predecessors, (689), 260 states have call successors, (260), 34 states have call predecessors, (260), 33 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-23 21:08:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2023-11-23 21:08:20,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:20,550 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:20,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:20,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1587337348, now seen corresponding path program 1 times [2023-11-23 21:08:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:20,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841727182] [2023-11-23 21:08:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17843 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17843 trivial. 0 not checked. [2023-11-23 21:08:24,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841727182] [2023-11-23 21:08:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841727182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34651027] [2023-11-23 21:08:24,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:24,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:24,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:24,652 INFO L87 Difference]: Start difference. First operand has 786 states, 491 states have (on average 1.4032586558044806) internal successors, (689), 526 states have internal predecessors, (689), 260 states have call successors, (260), 34 states have call predecessors, (260), 33 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-23 21:08:26,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:28,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:30,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:32,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:32,766 INFO L93 Difference]: Finished difference Result 1843 states and 2866 transitions. [2023-11-23 21:08:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:32,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 953 [2023-11-23 21:08:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:32,822 INFO L225 Difference]: With dead ends: 1843 [2023-11-23 21:08:32,823 INFO L226 Difference]: Without dead ends: 1199 [2023-11-23 21:08:32,838 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 21:08:32,846 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 768 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:32,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2139 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-11-23 21:08:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-11-23 21:08:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1195. [2023-11-23 21:08:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 814 states have (on average 1.4054054054054055) internal successors, (1144), 826 states have internal predecessors, (1144), 325 states have call successors, (325), 56 states have call predecessors, (325), 55 states have return successors, (319), 315 states have call predecessors, (319), 319 states have call successors, (319) [2023-11-23 21:08:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1788 transitions. [2023-11-23 21:08:33,097 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1788 transitions. Word has length 953 [2023-11-23 21:08:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:33,102 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1788 transitions. [2023-11-23 21:08:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-23 21:08:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1788 transitions. [2023-11-23 21:08:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2023-11-23 21:08:33,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:33,203 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:33,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:08:33,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:33,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1761072757, now seen corresponding path program 1 times [2023-11-23 21:08:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987352364] [2023-11-23 21:08:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:33,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2023-11-23 21:08:36,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:36,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987352364] [2023-11-23 21:08:36,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987352364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:36,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:36,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:36,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544225754] [2023-11-23 21:08:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:36,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:36,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:36,034 INFO L87 Difference]: Start difference. First operand 1195 states and 1788 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:38,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:38,756 INFO L93 Difference]: Finished difference Result 3108 states and 4649 transitions. [2023-11-23 21:08:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:38,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 963 [2023-11-23 21:08:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:38,787 INFO L225 Difference]: With dead ends: 3108 [2023-11-23 21:08:38,787 INFO L226 Difference]: Without dead ends: 2129 [2023-11-23 21:08:38,792 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 21:08:38,794 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 1049 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:38,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1691 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 21:08:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-11-23 21:08:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2111. [2023-11-23 21:08:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1484 states have (on average 1.4359838274932615) internal successors, (2131), 1504 states have internal predecessors, (2131), 518 states have call successors, (518), 109 states have call predecessors, (518), 108 states have return successors, (512), 503 states have call predecessors, (512), 512 states have call successors, (512) [2023-11-23 21:08:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3161 transitions. [2023-11-23 21:08:39,047 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3161 transitions. Word has length 963 [2023-11-23 21:08:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:39,050 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3161 transitions. [2023-11-23 21:08:39,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3161 transitions. [2023-11-23 21:08:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2023-11-23 21:08:39,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:39,070 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:39,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:08:39,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:39,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1308107155, now seen corresponding path program 1 times [2023-11-23 21:08:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:39,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159258361] [2023-11-23 21:08:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2023-11-23 21:08:41,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159258361] [2023-11-23 21:08:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159258361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:41,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:41,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651685767] [2023-11-23 21:08:41,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:41,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:41,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:41,140 INFO L87 Difference]: Start difference. First operand 2111 states and 3161 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:42,475 INFO L93 Difference]: Finished difference Result 5846 states and 8748 transitions. [2023-11-23 21:08:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:42,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 965 [2023-11-23 21:08:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:42,516 INFO L225 Difference]: With dead ends: 5846 [2023-11-23 21:08:42,516 INFO L226 Difference]: Without dead ends: 3951 [2023-11-23 21:08:42,527 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 21:08:42,531 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 1060 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:42,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1719 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:08:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-11-23 21:08:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3933. [2023-11-23 21:08:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3933 states, 2806 states have (on average 1.4493941553813257) internal successors, (4067), 2842 states have internal predecessors, (4067), 912 states have call successors, (912), 215 states have call predecessors, (912), 214 states have return successors, (906), 887 states have call predecessors, (906), 906 states have call successors, (906) [2023-11-23 21:08:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3933 states to 3933 states and 5885 transitions. [2023-11-23 21:08:42,798 INFO L78 Accepts]: Start accepts. Automaton has 3933 states and 5885 transitions. Word has length 965 [2023-11-23 21:08:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:42,801 INFO L495 AbstractCegarLoop]: Abstraction has 3933 states and 5885 transitions. [2023-11-23 21:08:42,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3933 states and 5885 transitions. [2023-11-23 21:08:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2023-11-23 21:08:42,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:42,818 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:42,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:08:42,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:42,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash 30445613, now seen corresponding path program 1 times [2023-11-23 21:08:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:42,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710588356] [2023-11-23 21:08:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2023-11-23 21:08:44,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:44,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710588356] [2023-11-23 21:08:44,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710588356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:44,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:44,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036955645] [2023-11-23 21:08:44,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:44,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:44,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:44,501 INFO L87 Difference]: Start difference. First operand 3933 states and 5885 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:46,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:47,504 INFO L93 Difference]: Finished difference Result 11235 states and 16795 transitions. [2023-11-23 21:08:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 968 [2023-11-23 21:08:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:47,578 INFO L225 Difference]: With dead ends: 11235 [2023-11-23 21:08:47,579 INFO L226 Difference]: Without dead ends: 7518 [2023-11-23 21:08:47,598 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 21:08:47,599 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1045 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1736 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:08:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7518 states. [2023-11-23 21:08:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7518 to 7497. [2023-11-23 21:08:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7497 states, 5394 states have (on average 1.4562476826103077) internal successors, (7855), 5462 states have internal predecessors, (7855), 1676 states have call successors, (1676), 427 states have call predecessors, (1676), 426 states have return successors, (1670), 1631 states have call predecessors, (1670), 1670 states have call successors, (1670) [2023-11-23 21:08:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7497 states to 7497 states and 11201 transitions. [2023-11-23 21:08:48,239 INFO L78 Accepts]: Start accepts. Automaton has 7497 states and 11201 transitions. Word has length 968 [2023-11-23 21:08:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:48,242 INFO L495 AbstractCegarLoop]: Abstraction has 7497 states and 11201 transitions. [2023-11-23 21:08:48,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7497 states and 11201 transitions. [2023-11-23 21:08:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2023-11-23 21:08:48,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:48,262 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:48,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:08:48,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:48,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1193178053, now seen corresponding path program 1 times [2023-11-23 21:08:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:48,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298295251] [2023-11-23 21:08:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:48,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2023-11-23 21:08:50,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298295251] [2023-11-23 21:08:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298295251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:50,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833143215] [2023-11-23 21:08:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:50,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:50,347 INFO L87 Difference]: Start difference. First operand 7497 states and 11201 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2023-11-23 21:08:52,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:08:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:53,104 INFO L93 Difference]: Finished difference Result 7499 states and 11202 transitions. [2023-11-23 21:08:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:53,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 968 [2023-11-23 21:08:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:53,177 INFO L225 Difference]: With dead ends: 7499 [2023-11-23 21:08:53,177 INFO L226 Difference]: Without dead ends: 7496 [2023-11-23 21:08:53,181 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 21:08:53,182 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 861 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:53,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1002 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:08:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2023-11-23 21:08:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7496. [2023-11-23 21:08:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5394 states have (on average 1.4560622914349277) internal successors, (7854), 5461 states have internal predecessors, (7854), 1675 states have call successors, (1675), 427 states have call predecessors, (1675), 426 states have return successors, (1670), 1631 states have call predecessors, (1670), 1670 states have call successors, (1670) [2023-11-23 21:08:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 11199 transitions. [2023-11-23 21:08:53,736 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 11199 transitions. Word has length 968 [2023-11-23 21:08:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:53,738 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 11199 transitions. [2023-11-23 21:08:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2023-11-23 21:08:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 11199 transitions. [2023-11-23 21:08:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2023-11-23 21:08:53,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:53,752 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:53,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:08:53,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:53,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -621450790, now seen corresponding path program 1 times [2023-11-23 21:08:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159049946] [2023-11-23 21:08:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2023-11-23 21:08:55,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:55,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159049946] [2023-11-23 21:08:55,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159049946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:55,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:55,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:55,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147772180] [2023-11-23 21:08:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:55,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:55,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:55,751 INFO L87 Difference]: Start difference. First operand 7496 states and 11199 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-23 21:08:57,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []