./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/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_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/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_65d041bf-9229-4da1-be29-aebb8dd2a89c/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_65d041bf-9229-4da1-be29-aebb8dd2a89c/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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:24:22,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:24:22,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:24:22,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:24:22,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:24:22,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:24:22,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:24:22,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:24:22,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:24:22,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:24:22,644 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:24:22,645 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:24:22,645 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:24:22,646 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:24:22,647 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:24:22,647 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:24:22,648 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:24:22,649 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:24:22,649 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:24:22,650 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:24:22,651 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:24:22,651 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:24:22,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:24:22,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:24:22,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:24:22,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:24:22,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:24:22,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:24:22,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:24:22,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:24:22,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:24:22,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:24:22,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:24:22,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:24:22,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:22,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:24:22,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:24:22,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:24:22,661 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:24:22,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:24:22,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:24:22,662 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:24:22,662 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:24:22,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:24:22,663 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_65d041bf-9229-4da1-be29-aebb8dd2a89c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2023-11-23 21:24:22,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:24:22,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:24:22,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:24:22,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:24:22,919 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:24:22,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-23 21:24:26,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:24:26,659 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:24:26,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-23 21:24:26,716 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/data/21bab5f4e/00f3807098f646c8bf3961bf246b9dfa/FLAG195e41790 [2023-11-23 21:24:26,736 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/data/21bab5f4e/00f3807098f646c8bf3961bf246b9dfa [2023-11-23 21:24:26,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:24:26,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:24:26,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:26,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:24:26,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:24:26,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:26" (1/1) ... [2023-11-23 21:24:26,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b05b9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:26, skipping insertion in model container [2023-11-23 21:24:26,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:26" (1/1) ... [2023-11-23 21:24:26,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:24:28,138 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_65d041bf-9229-4da1-be29-aebb8dd2a89c/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2023-11-23 21:24:28,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:28,300 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:24:28,453 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] [2023-11-23 21:24:28,662 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_65d041bf-9229-4da1-be29-aebb8dd2a89c/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2023-11-23 21:24:28,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:28,800 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:28,808 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:24:28,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28 WrapperNode [2023-11-23 21:24:28,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:28,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:28,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:24:28,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:24:28,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:28,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,097 INFO L138 Inliner]: procedures = 196, calls = 1051, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2643 [2023-11-23 21:24:29,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:29,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:24:29,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:24:29,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:24:29,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:24:29,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:24:29,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:24:29,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:24:29,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (1/1) ... [2023-11-23 21:24:29,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:29,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:29,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:24:29,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d041bf-9229-4da1-be29-aebb8dd2a89c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:24:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:24:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2023-11-23 21:24:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2023-11-23 21:24:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-23 21:24:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-23 21:24:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:24:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:24:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2023-11-23 21:24:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2023-11-23 21:24:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2023-11-23 21:24:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2023-11-23 21:24:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:24:29,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:24:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:24:29,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:24:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:24:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:24:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2023-11-23 21:24:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2023-11-23 21:24:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:24:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:24:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:24:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2023-11-23 21:24:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2023-11-23 21:24:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:24:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-23 21:24:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-23 21:24:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2023-11-23 21:24:29,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2023-11-23 21:24:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:24:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:24:29,364 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:24:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:24:29,365 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:24:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2023-11-23 21:24:29,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2023-11-23 21:24:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2023-11-23 21:24:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2023-11-23 21:24:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 21:24:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 21:24:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2023-11-23 21:24:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2023-11-23 21:24:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:24:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:24:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:24:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2023-11-23 21:24:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2023-11-23 21:24:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:24:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2023-11-23 21:24:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2023-11-23 21:24:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2023-11-23 21:24:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2023-11-23 21:24:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2023-11-23 21:24:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2023-11-23 21:24:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2023-11-23 21:24:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2023-11-23 21:24:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:24:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:24:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2023-11-23 21:24:29,371 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2023-11-23 21:24:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:24:29,372 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:24:29,372 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2023-11-23 21:24:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2023-11-23 21:24:29,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:24:29,373 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-23 21:24:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2023-11-23 21:24:29,373 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2023-11-23 21:24:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2023-11-23 21:24:29,373 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2023-11-23 21:24:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2023-11-23 21:24:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:24:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2023-11-23 21:24:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2023-11-23 21:24:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:24:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2023-11-23 21:24:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2023-11-23 21:24:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2023-11-23 21:24:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2023-11-23 21:24:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2023-11-23 21:24:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2023-11-23 21:24:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:24:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:24:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:24:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2023-11-23 21:24:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2023-11-23 21:24:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2023-11-23 21:24:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2023-11-23 21:24:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2023-11-23 21:24:29,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2023-11-23 21:24:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2023-11-23 21:24:29,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2023-11-23 21:24:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:24:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:24:29,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:24:29,836 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:24:29,839 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:24:34,222 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:24:35,507 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:24:35,508 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:24:35,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:35 BoogieIcfgContainer [2023-11-23 21:24:35,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:24:35,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:24:35,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:24:35,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:24:35,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:24:26" (1/3) ... [2023-11-23 21:24:35,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0f8361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:35, skipping insertion in model container [2023-11-23 21:24:35,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:28" (2/3) ... [2023-11-23 21:24:35,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0f8361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:35, skipping insertion in model container [2023-11-23 21:24:35,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:35" (3/3) ... [2023-11-23 21:24:35,523 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2023-11-23 21:24:35,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:24:35,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:24:35,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:24:35,630 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;@7b1c4fc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:24:35,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:24:35,639 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) [2023-11-23 21:24:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:24:35,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:35,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:35,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:35,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash 296334265, now seen corresponding path program 1 times [2023-11-23 21:24:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096322305] [2023-11-23 21:24:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:24:37,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096322305] [2023-11-23 21:24:37,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096322305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:37,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:37,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:37,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106654612] [2023-11-23 21:24:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:37,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:37,260 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) [2023-11-23 21:24:39,327 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 21:24:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:40,088 INFO L93 Difference]: Finished difference Result 1473 states and 2183 transitions. [2023-11-23 21:24:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:40,090 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 [2023-11-23 21:24:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:40,114 INFO L225 Difference]: With dead ends: 1473 [2023-11-23 21:24:40,115 INFO L226 Difference]: Without dead ends: 975 [2023-11-23 21:24:40,123 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 [2023-11-23 21:24:40,126 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 [2023-11-23 21:24:40,127 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] [2023-11-23 21:24:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-11-23 21:24:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 971. [2023-11-23 21:24:40,287 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) [2023-11-23 21:24:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1422 transitions. [2023-11-23 21:24:40,299 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1422 transitions. Word has length 18 [2023-11-23 21:24:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:40,300 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1422 transitions. [2023-11-23 21:24:40,300 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) [2023-11-23 21:24:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1422 transitions. [2023-11-23 21:24:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:24:40,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:40,307 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] [2023-11-23 21:24:40,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:24:40,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:40,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1599435826, now seen corresponding path program 1 times [2023-11-23 21:24:40,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757190828] [2023-11-23 21:24:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:40,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:24:41,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:41,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757190828] [2023-11-23 21:24:41,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757190828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:41,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:41,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897040690] [2023-11-23 21:24:41,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:41,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:41,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:41,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:41,167 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) [2023-11-23 21:24:43,217 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 21:24:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:43,700 INFO L93 Difference]: Finished difference Result 973 states and 1423 transitions. [2023-11-23 21:24:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:43,701 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 [2023-11-23 21:24:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:43,712 INFO L225 Difference]: With dead ends: 973 [2023-11-23 21:24:43,712 INFO L226 Difference]: Without dead ends: 970 [2023-11-23 21:24:43,713 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 [2023-11-23 21:24:43,715 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 704 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:43,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 623 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 21:24:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-23 21:24:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2023-11-23 21:24:43,782 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) [2023-11-23 21:24:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1420 transitions. [2023-11-23 21:24:43,793 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1420 transitions. Word has length 20 [2023-11-23 21:24:43,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:43,794 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1420 transitions. [2023-11-23 21:24:43,794 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) [2023-11-23 21:24:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1420 transitions. [2023-11-23 21:24:43,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:24:43,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:43,797 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] [2023-11-23 21:24:43,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:24:43,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:43,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1956825474, now seen corresponding path program 1 times [2023-11-23 21:24:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:43,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893481205] [2023-11-23 21:24:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:24:44,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:44,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893481205] [2023-11-23 21:24:44,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893481205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:44,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:44,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644691276] [2023-11-23 21:24:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:44,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:44,725 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) [2023-11-23 21:24:46,773 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 21:24:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:47,125 INFO L93 Difference]: Finished difference Result 972 states and 1421 transitions. [2023-11-23 21:24:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:47,126 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 [2023-11-23 21:24:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:47,133 INFO L225 Difference]: With dead ends: 972 [2023-11-23 21:24:47,133 INFO L226 Difference]: Without dead ends: 969 [2023-11-23 21:24:47,134 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 [2023-11-23 21:24:47,136 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 [2023-11-23 21:24:47,137 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] [2023-11-23 21:24:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-23 21:24:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2023-11-23 21:24:47,192 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) [2023-11-23 21:24:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1418 transitions. [2023-11-23 21:24:47,201 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1418 transitions. Word has length 21 [2023-11-23 21:24:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:47,202 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1418 transitions. [2023-11-23 21:24:47,202 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) [2023-11-23 21:24:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1418 transitions. [2023-11-23 21:24:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:24:47,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:47,206 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] [2023-11-23 21:24:47,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:24:47,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:47,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash 531780945, now seen corresponding path program 1 times [2023-11-23 21:24:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:47,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468665578] [2023-11-23 21:24:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:47,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:24:47,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468665578] [2023-11-23 21:24:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468665578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:47,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858926877] [2023-11-23 21:24:47,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:47,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:47,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:47,981 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) [2023-11-23 21:24:50,025 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 21:24:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:50,432 INFO L93 Difference]: Finished difference Result 971 states and 1419 transitions. [2023-11-23 21:24:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:50,433 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 [2023-11-23 21:24:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:50,441 INFO L225 Difference]: With dead ends: 971 [2023-11-23 21:24:50,441 INFO L226 Difference]: Without dead ends: 968 [2023-11-23 21:24:50,442 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 [2023-11-23 21:24:50,443 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, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:50,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 619 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 21:24:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-23 21:24:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2023-11-23 21:24:50,507 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) [2023-11-23 21:24:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1416 transitions. [2023-11-23 21:24:50,516 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1416 transitions. Word has length 22 [2023-11-23 21:24:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:50,517 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1416 transitions. [2023-11-23 21:24:50,517 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) [2023-11-23 21:24:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1416 transitions. [2023-11-23 21:24:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:24:50,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:50,519 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] [2023-11-23 21:24:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:24:50,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:50,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash -694921627, now seen corresponding path program 1 times [2023-11-23 21:24:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587683438] [2023-11-23 21:24:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:24:51,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:51,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587683438] [2023-11-23 21:24:51,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587683438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:51,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:51,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373346662] [2023-11-23 21:24:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:51,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:51,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:51,203 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) [2023-11-23 21:24:53,242 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 21:24:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:53,631 INFO L93 Difference]: Finished difference Result 970 states and 1417 transitions. [2023-11-23 21:24:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:53,657 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 [2023-11-23 21:24:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:53,664 INFO L225 Difference]: With dead ends: 970 [2023-11-23 21:24:53,664 INFO L226 Difference]: Without dead ends: 967 [2023-11-23 21:24:53,665 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 [2023-11-23 21:24:53,667 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 [2023-11-23 21:24:53,667 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] [2023-11-23 21:24:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-23 21:24:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2023-11-23 21:24:53,735 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) [2023-11-23 21:24:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1414 transitions. [2023-11-23 21:24:53,760 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1414 transitions. Word has length 23 [2023-11-23 21:24:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:53,760 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1414 transitions. [2023-11-23 21:24:53,761 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) [2023-11-23 21:24:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1414 transitions. [2023-11-23 21:24:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:24:53,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:53,765 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] [2023-11-23 21:24:53,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:24:53,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:53,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash -67990828, now seen corresponding path program 1 times [2023-11-23 21:24:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351787324] [2023-11-23 21:24:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:24:54,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:54,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351787324] [2023-11-23 21:24:54,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351787324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:54,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:54,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:54,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221801409] [2023-11-23 21:24:54,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:54,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:54,501 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) [2023-11-23 21:24:56,540 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 21:24:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:57,164 INFO L93 Difference]: Finished difference Result 2425 states and 3494 transitions. [2023-11-23 21:24:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:57,165 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 [2023-11-23 21:24:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:57,176 INFO L225 Difference]: With dead ends: 2425 [2023-11-23 21:24:57,176 INFO L226 Difference]: Without dead ends: 1453 [2023-11-23 21:24:57,181 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 [2023-11-23 21:24:57,182 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 [2023-11-23 21:24:57,183 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] [2023-11-23 21:24:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-11-23 21:24:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1447. [2023-11-23 21:24:57,309 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) [2023-11-23 21:24:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2050 transitions. [2023-11-23 21:24:57,323 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2050 transitions. Word has length 24 [2023-11-23 21:24:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:57,323 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2050 transitions. [2023-11-23 21:24:57,324 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) [2023-11-23 21:24:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2050 transitions. [2023-11-23 21:24:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 21:24:57,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:57,334 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] [2023-11-23 21:24:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:24:57,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:57,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1606149064, now seen corresponding path program 1 times [2023-11-23 21:24:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:57,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282136986] [2023-11-23 21:24:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 21:24:58,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282136986] [2023-11-23 21:24:58,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282136986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:58,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:58,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:24:58,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580327263] [2023-11-23 21:24:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:58,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:58,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:58,314 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) [2023-11-23 21:25:00,354 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 21:25:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:25:01,011 INFO L93 Difference]: Finished difference Result 2598 states and 3707 transitions. [2023-11-23 21:25:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:25:01,012 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 [2023-11-23 21:25:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:25:01,020 INFO L225 Difference]: With dead ends: 2598 [2023-11-23 21:25:01,020 INFO L226 Difference]: Without dead ends: 1152 [2023-11-23 21:25:01,026 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 21:25:01,027 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, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:25:01,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1209 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:25:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-11-23 21:25:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2023-11-23 21:25:01,109 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) [2023-11-23 21:25:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1656 transitions. [2023-11-23 21:25:01,120 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1656 transitions. Word has length 160 [2023-11-23 21:25:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:25:01,122 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1656 transitions. [2023-11-23 21:25:01,122 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) [2023-11-23 21:25:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1656 transitions. [2023-11-23 21:25:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-23 21:25:01,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:25:01,130 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] [2023-11-23 21:25:01,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:25:01,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:25:01,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:25:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1912128252, now seen corresponding path program 1 times [2023-11-23 21:25:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:25:01,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276289449] [2023-11-23 21:25:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:25:01,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:25:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:25:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-23 21:25:02,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:25:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276289449] [2023-11-23 21:25:02,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276289449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:25:02,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:25:02,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:25:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543350466] [2023-11-23 21:25:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:25:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:25:02,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:25:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:25:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:25:02,420 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) [2023-11-23 21:25:04,458 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 21:25:06,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:25:08,482 WARN L539 Checker$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 21:25:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:25:09,265 INFO L93 Difference]: Finished difference Result 2103 states and 3024 transitions. [2023-11-23 21:25:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:25:09,266 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 175 [2023-11-23 21:25:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:25:09,275 INFO L225 Difference]: With dead ends: 2103 [2023-11-23 21:25:09,275 INFO L226 Difference]: Without dead ends: 1164 [2023-11-23 21:25:09,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:25:09,280 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 7 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:25:09,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1817 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 21:25:09,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-23 21:25:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1160. [2023-11-23 21:25:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 779 states have (on average 1.4415917843388961) internal successors, (1123), 798 states have internal predecessors, (1123), 270 states have call successors, (270), 110 states have call predecessors, (270), 110 states have return successors, (272), 265 states have call predecessors, (272), 268 states have call successors, (272) [2023-11-23 21:25:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1665 transitions. [2023-11-23 21:25:09,371 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1665 transitions. Word has length 175 [2023-11-23 21:25:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:25:09,371 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1665 transitions. [2023-11-23 21:25:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-23 21:25:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1665 transitions. [2023-11-23 21:25:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:25:09,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:25:09,380 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 2, 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, 1, 1, 1, 1] [2023-11-23 21:25:09,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:25:09,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:25:09,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:25:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash -609815564, now seen corresponding path program 1 times [2023-11-23 21:25:09,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:25:09,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920413034] [2023-11-23 21:25:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:25:09,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:25:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:25:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 21:25:10,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:25:10,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920413034] [2023-11-23 21:25:10,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920413034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:25:10,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:25:10,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:25:10,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276770052] [2023-11-23 21:25:10,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:25:10,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:25:10,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:25:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:25:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:25:10,450 INFO L87 Difference]: Start difference. First operand 1160 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:25:12,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:25:14,500 WARN L539 Checker$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 21:25:16,511 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 21:25:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:25:17,288 INFO L93 Difference]: Finished difference Result 2121 states and 3046 transitions. [2023-11-23 21:25:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:25:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2023-11-23 21:25:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:25:17,298 INFO L225 Difference]: With dead ends: 2121 [2023-11-23 21:25:17,299 INFO L226 Difference]: Without dead ends: 1174 [2023-11-23 21:25:17,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:25:17,304 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 7 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:25:17,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1822 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 304 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 21:25:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-11-23 21:25:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1165. [2023-11-23 21:25:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 783 states have (on average 1.4393358876117497) internal successors, (1127), 803 states have internal predecessors, (1127), 271 states have call successors, (271), 110 states have call predecessors, (271), 110 states have return successors, (273), 266 states have call predecessors, (273), 269 states have call successors, (273) [2023-11-23 21:25:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1671 transitions. [2023-11-23 21:25:17,393 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1671 transitions. Word has length 181 [2023-11-23 21:25:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:25:17,394 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1671 transitions. [2023-11-23 21:25:17,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:25:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1671 transitions. [2023-11-23 21:25:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-23 21:25:17,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:25:17,402 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:25:17,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:25:17,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:25:17,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:25:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1294435562, now seen corresponding path program 1 times [2023-11-23 21:25:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:25:17,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171709128] [2023-11-23 21:25:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:25:17,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:25:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat