./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98b726a200cc424fa7bb1c37464c61d975878210ba7711cf31eb9bd278784d63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:49:40,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:49:40,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:49:40,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:49:40,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:49:40,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:49:40,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:49:40,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:49:40,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:49:40,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:49:40,664 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:49:40,665 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:49:40,665 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:49:40,666 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:49:40,666 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:49:40,667 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:49:40,667 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:49:40,668 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:49:40,668 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:49:40,669 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:49:40,669 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:49:40,670 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:49:40,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:49:40,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:49:40,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:49:40,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:49:40,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:49:40,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:49:40,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:49:40,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:49:40,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:49:40,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:49:40,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:49:40,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:40,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:49:40,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:49:40,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:49:40,676 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:49:40,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:49:40,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:49:40,677 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:49:40,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:49:40,678 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_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98b726a200cc424fa7bb1c37464c61d975878210ba7711cf31eb9bd278784d63 [2023-11-12 00:49:40,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:49:41,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:49:41,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:49:41,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:49:41,010 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:49:41,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-12 00:49:44,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:49:44,786 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:49:44,787 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-12 00:49:44,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/data/3b6bc5a0a/5113690c85ac43adad02c8833f9c4d0a/FLAG9fae33b6c [2023-11-12 00:49:44,858 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/data/3b6bc5a0a/5113690c85ac43adad02c8833f9c4d0a [2023-11-12 00:49:44,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:49:44,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:49:44,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:44,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:49:44,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:49:44,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:44" (1/1) ... [2023-11-12 00:49:44,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e0992c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:44, skipping insertion in model container [2023-11-12 00:49:44,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:44" (1/1) ... [2023-11-12 00:49:45,024 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:49:46,612 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_31a75add-0c79-466b-bdbd-afc3d6d260ab/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i[171889,171902] [2023-11-12 00:49:46,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:46,751 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:49:46,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [3647] [2023-11-12 00:49:46,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [3654] [2023-11-12 00:49:47,052 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_31a75add-0c79-466b-bdbd-afc3d6d260ab/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i[171889,171902] [2023-11-12 00:49:47,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:47,154 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:49:47,163 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:49:47,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47 WrapperNode [2023-11-12 00:49:47,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:47,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:47,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:49:47,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:49:47,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,457 INFO L138 Inliner]: procedures = 180, calls = 1666, calls flagged for inlining = 68, calls inlined = 60, statements flattened = 3476 [2023-11-12 00:49:47,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:47,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:49:47,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:49:47,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:49:47,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:49:47,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:49:47,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:49:47,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:49:47,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (1/1) ... [2023-11-12 00:49:47,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:47,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:47,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:49:47,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a75add-0c79-466b-bdbd-afc3d6d260ab/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:49:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure gpiochip_remove [2023-11-12 00:49:48,000 INFO L138 BoogieDeclarations]: Found implementation of procedure gpiochip_remove [2023-11-12 00:49:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:49:48,001 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:49:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:49:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:49:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_mdelay [2023-11-12 00:49:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_mdelay [2023-11-12 00:49:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_clock_lock_of_sm501_devdata [2023-11-12 00:49:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_clock_lock_of_sm501_devdata [2023-11-12 00:49:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_calc_clock [2023-11-12 00:49:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_calc_clock [2023-11-12 00:49:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_input [2023-11-12 00:49:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_input [2023-11-12 00:49:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_probe [2023-11-12 00:49:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_probe [2023-11-12 00:49:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-12 00:49:48,006 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-12 00:49:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_regs [2023-11-12 00:49:48,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_regs [2023-11-12 00:49:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_setup_uart_data [2023-11-12 00:49:48,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_setup_uart_data [2023-11-12 00:49:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_remove [2023-11-12 00:49:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_remove [2023-11-12 00:49:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:49:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_set_power [2023-11-12 00:49:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_set_power [2023-11-12 00:49:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_pin2nr [2023-11-12 00:49:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_pin2nr [2023-11-12 00:49:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure to_sm501_gpio [2023-11-12 00:49:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sm501_gpio [2023-11-12 00:49:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_unit_power [2023-11-12 00:49:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_unit_power [2023-11-12 00:49:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_dev_remove [2023-11-12 00:49:48,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_dev_remove [2023-11-12 00:49:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:49:48,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:49:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_get [2023-11-12 00:49:48,015 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_get [2023-11-12 00:49:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_clock_lock_of_sm501_devdata [2023-11-12 00:49:48,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_clock_lock_of_sm501_devdata [2023-11-12 00:49:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_mem [2023-11-12 00:49:48,017 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_mem [2023-11-12 00:49:48,021 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:49:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_calc_pll [2023-11-12 00:49:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_calc_pll [2023-11-12 00:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:49:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:49:48,024 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:49:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-12 00:49:48,024 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-12 00:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:49:48,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:49:48,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2023-11-12 00:49:48,026 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2023-11-12 00:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_subio [2023-11-12 00:49:48,026 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_subio [2023-11-12 00:49:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_register_device [2023-11-12 00:49:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_register_device [2023-11-12 00:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:49:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_dev [2023-11-12 00:49:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_dev [2023-11-12 00:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_register_chip [2023-11-12 00:49:48,030 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_register_chip [2023-11-12 00:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure to_sm_device [2023-11-12 00:49:48,030 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sm_device [2023-11-12 00:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 00:49:48,031 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 00:49:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:49:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:49:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_select_clock [2023-11-12 00:49:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_select_clock [2023-11-12 00:49:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:49:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_irq [2023-11-12 00:49:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_irq [2023-11-12 00:49:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:49:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:49:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:49:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_sync_regs [2023-11-12 00:49:48,034 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_sync_regs [2023-11-12 00:49:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2023-11-12 00:49:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2023-11-12 00:49:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:49:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:49:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:49:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_subdev [2023-11-12 00:49:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_subdev [2023-11-12 00:49:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_to_dev [2023-11-12 00:49:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_to_dev [2023-11-12 00:49:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-12 00:49:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-12 00:49:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:49:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:49:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-11-12 00:49:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-11-12 00:49:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:49:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_dump_gate [2023-11-12 00:49:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_dump_gate [2023-11-12 00:49:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 00:49:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 00:49:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-12 00:49:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-12 00:49:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:49:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-12 00:49:48,039 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-12 00:49:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:49:48,039 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:49:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_set_clock [2023-11-12 00:49:48,040 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_set_clock [2023-11-12 00:49:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_modify_reg [2023-11-12 00:49:48,041 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_modify_reg [2023-11-12 00:49:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:49:48,041 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:49:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 00:49:48,042 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 00:49:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-12 00:49:48,042 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-12 00:49:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_reg [2023-11-12 00:49:48,042 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_reg [2023-11-12 00:49:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-12 00:49:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-12 00:49:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:49:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-12 00:49:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-12 00:49:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_resume [2023-11-12 00:49:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_resume [2023-11-12 00:49:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_ensure_gpio [2023-11-12 00:49:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_ensure_gpio [2023-11-12 00:49:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:49:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:49:48,624 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:49:48,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:49:54,639 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:49:56,219 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:49:56,220 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:49:56,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:56 BoogieIcfgContainer [2023-11-12 00:49:56,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:49:56,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:49:56,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:49:56,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:49:56,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:49:44" (1/3) ... [2023-11-12 00:49:56,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588b65af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:56, skipping insertion in model container [2023-11-12 00:49:56,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:47" (2/3) ... [2023-11-12 00:49:56,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588b65af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:56, skipping insertion in model container [2023-11-12 00:49:56,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:56" (3/3) ... [2023-11-12 00:49:56,241 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-12 00:49:56,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:49:56,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:49:56,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:49:56,373 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;@318da1dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:49:56,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:49:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 843 states, 495 states have (on average 1.2747474747474747) internal successors, (631), 509 states have internal predecessors, (631), 285 states have call successors, (285), 61 states have call predecessors, (285), 61 states have return successors, (285), 285 states have call predecessors, (285), 285 states have call successors, (285) [2023-11-12 00:49:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:49:56,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:56,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:56,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:56,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1714529726, now seen corresponding path program 1 times [2023-11-12 00:49:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:56,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733811355] [2023-11-12 00:49:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:57,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733811355] [2023-11-12 00:49:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733811355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:57,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:49:57,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455971412] [2023-11-12 00:49:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:49:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:57,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:49:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:49:57,233 INFO L87 Difference]: Start difference. First operand has 843 states, 495 states have (on average 1.2747474747474747) internal successors, (631), 509 states have internal predecessors, (631), 285 states have call successors, (285), 61 states have call predecessors, (285), 61 states have return successors, (285), 285 states have call predecessors, (285), 285 states have call successors, (285) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:01,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:03,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:05,602 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 [] [2023-11-12 00:50:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:05,757 INFO L93 Difference]: Finished difference Result 2513 states and 3621 transitions. [2023-11-12 00:50:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 12 [2023-11-12 00:50:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:05,789 INFO L225 Difference]: With dead ends: 2513 [2023-11-12 00:50:05,789 INFO L226 Difference]: Without dead ends: 1669 [2023-11-12 00:50:05,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:05,805 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 1167 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:05,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 2092 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-11-12 00:50:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-12 00:50:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1665. [2023-11-12 00:50:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 980 states have (on average 1.2663265306122449) internal successors, (1241), 999 states have internal predecessors, (1241), 564 states have call successors, (564), 121 states have call predecessors, (564), 120 states have return successors, (558), 558 states have call predecessors, (558), 558 states have call successors, (558) [2023-11-12 00:50:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2363 transitions. [2023-11-12 00:50:06,026 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2363 transitions. Word has length 12 [2023-11-12 00:50:06,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:06,027 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2363 transitions. [2023-11-12 00:50:06,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2363 transitions. [2023-11-12 00:50:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:50:06,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:06,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:06,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:50:06,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:06,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:06,034 INFO L85 PathProgramCache]: Analyzing trace with hash 597776403, now seen corresponding path program 1 times [2023-11-12 00:50:06,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249291897] [2023-11-12 00:50:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:06,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:06,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249291897] [2023-11-12 00:50:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249291897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:06,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:06,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875019980] [2023-11-12 00:50:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:06,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:06,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:06,371 INFO L87 Difference]: Start difference. First operand 1665 states and 2363 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:09,459 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 [] [2023-11-12 00:50:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:09,527 INFO L93 Difference]: Finished difference Result 1709 states and 2397 transitions. [2023-11-12 00:50:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 14 [2023-11-12 00:50:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:09,546 INFO L225 Difference]: With dead ends: 1709 [2023-11-12 00:50:09,547 INFO L226 Difference]: Without dead ends: 1705 [2023-11-12 00:50:09,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:09,550 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1038 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:09,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1174 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 00:50:09,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-11-12 00:50:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1703. [2023-11-12 00:50:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1004 states have (on average 1.2609561752988048) internal successors, (1266), 1021 states have internal predecessors, (1266), 564 states have call successors, (564), 135 states have call predecessors, (564), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-12 00:50:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2390 transitions. [2023-11-12 00:50:09,701 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2390 transitions. Word has length 14 [2023-11-12 00:50:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:09,703 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2390 transitions. [2023-11-12 00:50:09,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2390 transitions. [2023-11-12 00:50:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:50:09,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:09,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:09,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:50:09,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:09,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1350618769, now seen corresponding path program 1 times [2023-11-12 00:50:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:09,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043252087] [2023-11-12 00:50:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:09,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:10,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:10,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043252087] [2023-11-12 00:50:10,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043252087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:10,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:10,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:10,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023729285] [2023-11-12 00:50:10,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:10,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:10,020 INFO L87 Difference]: Start difference. First operand 1703 states and 2390 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:13,105 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 [] [2023-11-12 00:50:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:13,160 INFO L93 Difference]: Finished difference Result 1705 states and 2391 transitions. [2023-11-12 00:50:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 15 [2023-11-12 00:50:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:13,174 INFO L225 Difference]: With dead ends: 1705 [2023-11-12 00:50:13,174 INFO L226 Difference]: Without dead ends: 1702 [2023-11-12 00:50:13,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:13,177 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 1174 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:13,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1041 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 00:50:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-11-12 00:50:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2023-11-12 00:50:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1004 states have (on average 1.2599601593625498) internal successors, (1265), 1020 states have internal predecessors, (1265), 563 states have call successors, (563), 135 states have call predecessors, (563), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-12 00:50:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2388 transitions. [2023-11-12 00:50:13,301 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2388 transitions. Word has length 15 [2023-11-12 00:50:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:13,301 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2388 transitions. [2023-11-12 00:50:13,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2388 transitions. [2023-11-12 00:50:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:50:13,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:13,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:13,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:50:13,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:13,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1081066794, now seen corresponding path program 1 times [2023-11-12 00:50:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498139206] [2023-11-12 00:50:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:13,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498139206] [2023-11-12 00:50:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498139206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:13,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:13,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008004090] [2023-11-12 00:50:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:13,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:13,560 INFO L87 Difference]: Start difference. First operand 1702 states and 2388 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:16,952 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 [] [2023-11-12 00:50:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:17,008 INFO L93 Difference]: Finished difference Result 1704 states and 2389 transitions. [2023-11-12 00:50:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:17,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 16 [2023-11-12 00:50:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:17,025 INFO L225 Difference]: With dead ends: 1704 [2023-11-12 00:50:17,026 INFO L226 Difference]: Without dead ends: 1701 [2023-11-12 00:50:17,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:17,029 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 1171 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:17,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1039 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-11-12 00:50:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2023-11-12 00:50:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2023-11-12 00:50:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1004 states have (on average 1.2589641434262948) internal successors, (1264), 1019 states have internal predecessors, (1264), 562 states have call successors, (562), 135 states have call predecessors, (562), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-12 00:50:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2386 transitions. [2023-11-12 00:50:17,214 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2386 transitions. Word has length 16 [2023-11-12 00:50:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:17,215 INFO L495 AbstractCegarLoop]: Abstraction has 1701 states and 2386 transitions. [2023-11-12 00:50:17,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2386 transitions. [2023-11-12 00:50:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:50:17,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:17,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:17,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:50:17,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:17,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 846096948, now seen corresponding path program 1 times [2023-11-12 00:50:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851063276] [2023-11-12 00:50:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:17,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851063276] [2023-11-12 00:50:17,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851063276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:17,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:17,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:17,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254023086] [2023-11-12 00:50:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:17,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:17,488 INFO L87 Difference]: Start difference. First operand 1701 states and 2386 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:20,725 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 [] [2023-11-12 00:50:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:20,783 INFO L93 Difference]: Finished difference Result 1703 states and 2387 transitions. [2023-11-12 00:50:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 17 [2023-11-12 00:50:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:20,797 INFO L225 Difference]: With dead ends: 1703 [2023-11-12 00:50:20,798 INFO L226 Difference]: Without dead ends: 1695 [2023-11-12 00:50:20,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:20,800 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:20,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1038 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 00:50:20,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-12 00:50:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2023-11-12 00:50:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 999 states have (on average 1.2582582582582582) internal successors, (1257), 1013 states have internal predecessors, (1257), 561 states have call successors, (561), 135 states have call predecessors, (561), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-12 00:50:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2378 transitions. [2023-11-12 00:50:20,972 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2378 transitions. Word has length 17 [2023-11-12 00:50:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:20,972 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2378 transitions. [2023-11-12 00:50:20,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:50:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2378 transitions. [2023-11-12 00:50:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-12 00:50:20,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:20,993 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:20,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:50:20,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:20,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1612929378, now seen corresponding path program 1 times [2023-11-12 00:50:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:20,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201482111] [2023-11-12 00:50:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-12 00:50:21,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201482111] [2023-11-12 00:50:21,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201482111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:21,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:21,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248817997] [2023-11-12 00:50:21,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:21,611 INFO L87 Difference]: Start difference. First operand 1695 states and 2378 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-12 00:50:26,494 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 [] [2023-11-12 00:50:28,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:30,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:30,586 INFO L93 Difference]: Finished difference Result 4117 states and 5761 transitions. [2023-11-12 00:50:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:30,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 203 [2023-11-12 00:50:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:30,607 INFO L225 Difference]: With dead ends: 4117 [2023-11-12 00:50:30,607 INFO L226 Difference]: Without dead ends: 2423 [2023-11-12 00:50:30,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:30,617 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1074 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:30,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 2175 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-11-12 00:50:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2023-11-12 00:50:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2420. [2023-11-12 00:50:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1429 states have (on average 1.2561231630510847) internal successors, (1795), 1446 states have internal predecessors, (1795), 793 states have call successors, (793), 198 states have call predecessors, (793), 197 states have return successors, (792), 792 states have call predecessors, (792), 792 states have call successors, (792) [2023-11-12 00:50:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3380 transitions. [2023-11-12 00:50:30,840 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3380 transitions. Word has length 203 [2023-11-12 00:50:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:30,842 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3380 transitions. [2023-11-12 00:50:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-12 00:50:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3380 transitions. [2023-11-12 00:50:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-12 00:50:30,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:30,858 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:30,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:50:30,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:30,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1272014377, now seen corresponding path program 1 times [2023-11-12 00:50:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:30,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970363725] [2023-11-12 00:50:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:30,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-12 00:50:31,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970363725] [2023-11-12 00:50:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970363725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009382674] [2023-11-12 00:50:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:31,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:31,252 INFO L87 Difference]: Start difference. First operand 2420 states and 3380 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)