./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX --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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:56,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:56,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:10:56,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:56,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:56,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:56,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:56,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:56,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:56,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:56,385 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:56,386 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:56,387 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:56,388 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:10:56,389 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:56,389 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:56,390 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:10:56,390 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:10:56,391 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:56,391 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:10:56,392 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:10:56,392 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:10:56,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:56,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:10:56,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:56,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:56,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:10:56,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:56,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:10:56,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:10:56,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:56,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:56,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:56,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:56,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:56,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:56,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:10:56,400 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:10:56,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:10:56,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:10:56,400 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:56,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:56,401 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_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2023-11-12 00:10:56,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:56,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:56,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:56,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:56,783 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:56,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-12 00:10:59,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:00,500 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:00,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-12 00:11:00,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/data/f09baf710/a268991fdd93490da3be193067418520/FLAGea2366a65 [2023-11-12 00:11:00,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/data/f09baf710/a268991fdd93490da3be193067418520 [2023-11-12 00:11:00,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:00,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:00,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:00,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:00,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:00,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:00" (1/1) ... [2023-11-12 00:11:00,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a60da70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:00, skipping insertion in model container [2023-11-12 00:11:00,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:00" (1/1) ... [2023-11-12 00:11:00,694 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:02,182 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_2b9c741e-ebf4-447f-a200-72627ad347e5/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2023-11-12 00:11:02,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:02,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:11:02,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3881-3882] [2023-11-12 00:11:02,644 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_2b9c741e-ebf4-447f-a200-72627ad347e5/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2023-11-12 00:11:02,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:02,756 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:11:02,765 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:11:02,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02 WrapperNode [2023-11-12 00:11:02,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:02,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:02,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:11:02,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:11:02,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:02,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:02,996 INFO L138 Inliner]: procedures = 196, calls = 1051, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2643 [2023-11-12 00:11:02,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:02,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:11:02,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:11:02,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:11:03,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:11:03,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:11:03,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:11:03,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:11:03,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (1/1) ... [2023-11-12 00:11:03,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:03,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:11:03,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9c741e-ebf4-447f-a200-72627ad347e5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:11:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:11:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2023-11-12 00:11:03,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2023-11-12 00:11:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-12 00:11:03,374 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-12 00:11:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:11:03,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:11:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2023-11-12 00:11:03,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2023-11-12 00:11:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2023-11-12 00:11:03,378 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2023-11-12 00:11:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:11:03,378 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:11:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:11:03,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:11:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 00:11:03,379 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 00:11:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2023-11-12 00:11:03,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2023-11-12 00:11:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:11:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:11:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:11:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2023-11-12 00:11:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2023-11-12 00:11:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:11:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 00:11:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 00:11:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2023-11-12 00:11:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2023-11-12 00:11:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:11:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:11:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:11:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:11:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:11:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2023-11-12 00:11:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2023-11-12 00:11:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2023-11-12 00:11:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2023-11-12 00:11:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-12 00:11:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-12 00:11:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2023-11-12 00:11:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2023-11-12 00:11:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:11:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:11:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:11:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2023-11-12 00:11:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2023-11-12 00:11:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:11:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2023-11-12 00:11:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2023-11-12 00:11:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2023-11-12 00:11:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2023-11-12 00:11:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2023-11-12 00:11:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2023-11-12 00:11:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2023-11-12 00:11:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2023-11-12 00:11:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:11:03,391 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:11:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2023-11-12 00:11:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2023-11-12 00:11:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:11:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:11:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2023-11-12 00:11:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2023-11-12 00:11:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:11:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-12 00:11:03,395 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2023-11-12 00:11:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2023-11-12 00:11:03,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2023-11-12 00:11:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2023-11-12 00:11:03,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2023-11-12 00:11:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:11:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2023-11-12 00:11:03,397 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2023-11-12 00:11:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:11:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2023-11-12 00:11:03,398 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2023-11-12 00:11:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2023-11-12 00:11:03,398 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2023-11-12 00:11:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2023-11-12 00:11:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2023-11-12 00:11:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:11:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:11:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:11:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2023-11-12 00:11:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2023-11-12 00:11:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2023-11-12 00:11:03,401 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2023-11-12 00:11:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2023-11-12 00:11:03,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2023-11-12 00:11:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2023-11-12 00:11:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2023-11-12 00:11:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:11:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:11:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:11:04,012 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:11:04,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:11:16,807 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:11:18,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:11:18,552 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:11:18,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:18 BoogieIcfgContainer [2023-11-12 00:11:18,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:11:18,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:11:18,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:11:18,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:11:18,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:00" (1/3) ... [2023-11-12 00:11:18,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98555a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:18, skipping insertion in model container [2023-11-12 00:11:18,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:02" (2/3) ... [2023-11-12 00:11:18,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98555a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:18, skipping insertion in model container [2023-11-12 00:11:18,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:18" (3/3) ... [2023-11-12 00:11:18,570 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-12 00:11:18,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:11:18,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:11:18,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:11:18,695 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;@6236f7a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:11:18,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:11:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 497 states, 329 states have (on average 1.4620060790273557) internal successors, (481), 348 states have internal predecessors, (481), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2023-11-12 00:11:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:11:18,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:18,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:18,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:18,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1140806136, now seen corresponding path program 1 times [2023-11-12 00:11:18,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842158241] [2023-11-12 00:11:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:18,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:20,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842158241] [2023-11-12 00:11:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842158241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:20,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:20,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337684552] [2023-11-12 00:11:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:20,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:20,127 INFO L87 Difference]: Start difference. First operand has 497 states, 329 states have (on average 1.4620060790273557) internal successors, (481), 348 states have internal predecessors, (481), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:22,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:11:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:22,990 INFO L93 Difference]: Finished difference Result 1473 states and 2183 transitions. [2023-11-12 00:11:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:22,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 00:11:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:23,019 INFO L225 Difference]: With dead ends: 1473 [2023-11-12 00:11:23,019 INFO L226 Difference]: Without dead ends: 975 [2023-11-12 00:11:23,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:23,032 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 689 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:23,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1248 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 00:11:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-11-12 00:11:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 971. [2023-11-12 00:11:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 647 states have (on average 1.4513137557959814) internal successors, (939), 675 states have internal predecessors, (939), 245 states have call successors, (245), 79 states have call predecessors, (245), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-12 00:11:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1422 transitions. [2023-11-12 00:11:23,279 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1422 transitions. Word has length 18 [2023-11-12 00:11:23,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:23,288 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1422 transitions. [2023-11-12 00:11:23,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1422 transitions. [2023-11-12 00:11:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:11:23,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:23,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:23,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:11:23,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:23,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:23,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1810786739, now seen corresponding path program 1 times [2023-11-12 00:11:23,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:23,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614106737] [2023-11-12 00:11:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:24,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614106737] [2023-11-12 00:11:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614106737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:24,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:24,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:24,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890558907] [2023-11-12 00:11:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:24,139 INFO L87 Difference]: Start difference. First operand 971 states and 1422 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:26,181 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 [] [2023-11-12 00:11:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:26,593 INFO L93 Difference]: Finished difference Result 973 states and 1423 transitions. [2023-11-12 00:11:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-12 00:11:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:26,607 INFO L225 Difference]: With dead ends: 973 [2023-11-12 00:11:26,607 INFO L226 Difference]: Without dead ends: 970 [2023-11-12 00:11:26,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:26,612 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 704 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:26,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 623 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 00:11:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-12 00:11:26,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2023-11-12 00:11:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 647 states have (on average 1.4497681607418855) internal successors, (938), 674 states have internal predecessors, (938), 244 states have call successors, (244), 79 states have call predecessors, (244), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-12 00:11:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1420 transitions. [2023-11-12 00:11:26,714 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1420 transitions. Word has length 20 [2023-11-12 00:11:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:26,715 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1420 transitions. [2023-11-12 00:11:26,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1420 transitions. [2023-11-12 00:11:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 00:11:26,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:26,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:26,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:11:26,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:26,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash -300085533, now seen corresponding path program 1 times [2023-11-12 00:11:26,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:26,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494773163] [2023-11-12 00:11:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:27,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494773163] [2023-11-12 00:11:27,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494773163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:27,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:27,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190951755] [2023-11-12 00:11:27,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:27,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:27,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:27,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:27,569 INFO L87 Difference]: Start difference. First operand 970 states and 1420 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:29,612 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 [] [2023-11-12 00:11:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:29,968 INFO L93 Difference]: Finished difference Result 972 states and 1421 transitions. [2023-11-12 00:11:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:29,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-12 00:11:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:29,977 INFO L225 Difference]: With dead ends: 972 [2023-11-12 00:11:29,977 INFO L226 Difference]: Without dead ends: 969 [2023-11-12 00:11:29,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:29,982 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 701 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:29,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 621 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:11:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-12 00:11:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2023-11-12 00:11:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 647 states have (on average 1.4482225656877898) internal successors, (937), 673 states have internal predecessors, (937), 243 states have call successors, (243), 79 states have call predecessors, (243), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-12 00:11:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1418 transitions. [2023-11-12 00:11:30,068 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1418 transitions. Word has length 21 [2023-11-12 00:11:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:30,069 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1418 transitions. [2023-11-12 00:11:30,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:30,069 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1418 transitions. [2023-11-12 00:11:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:11:30,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:30,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:11:30,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:30,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash -712983536, now seen corresponding path program 1 times [2023-11-12 00:11:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462634569] [2023-11-12 00:11:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:30,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462634569] [2023-11-12 00:11:30,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462634569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:30,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:30,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438727684] [2023-11-12 00:11:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:30,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:30,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:30,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:30,868 INFO L87 Difference]: Start difference. First operand 969 states and 1418 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:32,916 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 [] [2023-11-12 00:11:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:33,282 INFO L93 Difference]: Finished difference Result 971 states and 1419 transitions. [2023-11-12 00:11:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-12 00:11:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:33,291 INFO L225 Difference]: With dead ends: 971 [2023-11-12 00:11:33,291 INFO L226 Difference]: Without dead ends: 968 [2023-11-12 00:11:33,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:33,294 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 698 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:33,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 619 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:11:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-12 00:11:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2023-11-12 00:11:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 647 states have (on average 1.446676970633694) internal successors, (936), 672 states have internal predecessors, (936), 242 states have call successors, (242), 79 states have call predecessors, (242), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-12 00:11:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1416 transitions. [2023-11-12 00:11:33,431 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1416 transitions. Word has length 22 [2023-11-12 00:11:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:33,432 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1416 transitions. [2023-11-12 00:11:33,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1416 transitions. [2023-11-12 00:11:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:11:33,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:33,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:33,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:11:33,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:33,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -627914874, now seen corresponding path program 1 times [2023-11-12 00:11:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920312122] [2023-11-12 00:11:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:33,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:34,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:34,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920312122] [2023-11-12 00:11:34,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920312122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:34,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:34,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051733212] [2023-11-12 00:11:34,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:34,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:34,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:34,059 INFO L87 Difference]: Start difference. First operand 968 states and 1416 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:36,114 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 [] [2023-11-12 00:11:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:36,502 INFO L93 Difference]: Finished difference Result 970 states and 1417 transitions. [2023-11-12 00:11:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:36,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-12 00:11:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:36,510 INFO L225 Difference]: With dead ends: 970 [2023-11-12 00:11:36,515 INFO L226 Difference]: Without dead ends: 967 [2023-11-12 00:11:36,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:36,519 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 695 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:36,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 617 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 00:11:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-12 00:11:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2023-11-12 00:11:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 647 states have (on average 1.4451313755795983) internal successors, (935), 671 states have internal predecessors, (935), 241 states have call successors, (241), 79 states have call predecessors, (241), 78 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2023-11-12 00:11:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1414 transitions. [2023-11-12 00:11:36,605 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1414 transitions. Word has length 23 [2023-11-12 00:11:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:36,606 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1414 transitions. [2023-11-12 00:11:36,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1414 transitions. [2023-11-12 00:11:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:11:36,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:36,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:36,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:11:36,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:36,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2009218515, now seen corresponding path program 1 times [2023-11-12 00:11:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:36,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095289071] [2023-11-12 00:11:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:37,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:37,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095289071] [2023-11-12 00:11:37,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095289071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:37,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:37,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:37,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668986861] [2023-11-12 00:11:37,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:37,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:37,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:37,300 INFO L87 Difference]: Start difference. First operand 967 states and 1414 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:39,348 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 [] [2023-11-12 00:11:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:40,000 INFO L93 Difference]: Finished difference Result 2425 states and 3494 transitions. [2023-11-12 00:11:40,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:40,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-12 00:11:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:40,015 INFO L225 Difference]: With dead ends: 2425 [2023-11-12 00:11:40,015 INFO L226 Difference]: Without dead ends: 1453 [2023-11-12 00:11:40,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:40,022 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 665 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:40,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 917 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 00:11:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-11-12 00:11:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1447. [2023-11-12 00:11:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 940 states have (on average 1.3936170212765957) internal successors, (1310), 972 states have internal predecessors, (1310), 368 states have call successors, (368), 139 states have call predecessors, (368), 138 states have return successors, (372), 359 states have call predecessors, (372), 366 states have call successors, (372) [2023-11-12 00:11:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2050 transitions. [2023-11-12 00:11:40,219 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2050 transitions. Word has length 24 [2023-11-12 00:11:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:40,220 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2050 transitions. [2023-11-12 00:11:40,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2050 transitions. [2023-11-12 00:11:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-12 00:11:40,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:40,232 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:40,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:11:40,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:40,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash 615801339, now seen corresponding path program 1 times [2023-11-12 00:11:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106990754] [2023-11-12 00:11:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-12 00:11:41,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106990754] [2023-11-12 00:11:41,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106990754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:41,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:41,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:41,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300278552] [2023-11-12 00:11:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:41,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:41,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:41,275 INFO L87 Difference]: Start difference. First operand 1447 states and 2050 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:11:43,315 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 [] [2023-11-12 00:11:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:43,958 INFO L93 Difference]: Finished difference Result 2598 states and 3707 transitions. [2023-11-12 00:11:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2023-11-12 00:11:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:43,969 INFO L225 Difference]: With dead ends: 2598 [2023-11-12 00:11:43,969 INFO L226 Difference]: Without dead ends: 1152 [2023-11-12 00:11:43,975 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 [2023-11-12 00:11:43,976 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 305 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:43,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1209 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 00:11:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-11-12 00:11:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2023-11-12 00:11:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 773 states have (on average 1.445019404915912) internal successors, (1117), 791 states have internal predecessors, (1117), 269 states have call successors, (269), 110 states have call predecessors, (269), 109 states have return successors, (270), 264 states have call predecessors, (270), 267 states have call successors, (270) [2023-11-12 00:11:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1656 transitions. [2023-11-12 00:11:44,143 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1656 transitions. Word has length 160 [2023-11-12 00:11:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:44,145 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1656 transitions. [2023-11-12 00:11:44,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:11:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1656 transitions. [2023-11-12 00:11:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-12 00:11:44,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:44,157 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:44,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:11:44,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:11:44,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1791538521, now seen corresponding path program 1 times [2023-11-12 00:11:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:44,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022424753] [2023-11-12 00:11:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-12 00:11:45,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:45,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022424753] [2023-11-12 00:11:45,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022424753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:45,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:45,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:11:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451030447] [2023-11-12 00:11:45,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:45,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:11:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:11:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:45,344 INFO L87 Difference]: Start difference. First operand 1152 states and 1656 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:11:47,392 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 []