./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 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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/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 98b726a200cc424fa7bb1c37464c61d975878210ba7711cf31eb9bd278784d63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:09,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:09,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:31:09,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:09,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:09,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:09,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:09,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:09,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:09,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:09,921 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:09,922 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:09,922 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:09,924 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:31:09,925 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:09,925 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:09,926 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:31:09,926 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:31:09,927 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:09,927 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:31:09,928 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:31:09,929 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:31:09,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:09,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:09,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:09,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:09,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:09,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:09,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:09,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:09,936 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:09,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:09,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:09,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:09,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:09,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:09,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:09,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:09,939 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:31:09,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:31:09,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:09,940 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:09,941 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:09,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:09,941 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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98b726a200cc424fa7bb1c37464c61d975878210ba7711cf31eb9bd278784d63 [2023-11-23 21:31:10,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:10,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:10,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:10,318 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:10,319 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:10,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-23 21:31:13,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:14,127 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:14,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-23 21:31:14,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/data/734676c88/3b6082255d304eb3a7fedad70f5f0d9e/FLAG004b598f6 [2023-11-23 21:31:14,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/data/734676c88/3b6082255d304eb3a7fedad70f5f0d9e [2023-11-23 21:31:14,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:14,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:14,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:14,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:14,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:14,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3015fa1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14, skipping insertion in model container [2023-11-23 21:31:14,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:15,796 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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i[171889,171902] [2023-11-23 21:31:15,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:15,952 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:16,113 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [3647] [2023-11-23 21:31:16,116 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [3654] [2023-11-23 21:31:16,356 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_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i[171889,171902] [2023-11-23 21:31:16,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:16,470 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:31:16,478 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:16,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16 WrapperNode [2023-11-23 21:31:16,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:16,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:16,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:16,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:16,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,795 INFO L138 Inliner]: procedures = 180, calls = 1666, calls flagged for inlining = 68, calls inlined = 60, statements flattened = 3476 [2023-11-23 21:31:16,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:16,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:16,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:16,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:16,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:16,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:17,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:17,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:17,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:17,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:17,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (1/1) ... [2023-11-23 21:31:17,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:17,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:17,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:17,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure gpiochip_remove [2023-11-23 21:31:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure gpiochip_remove [2023-11-23 21:31:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:31:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:31:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:31:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:31:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_mdelay [2023-11-23 21:31:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_mdelay [2023-11-23 21:31:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_clock_lock_of_sm501_devdata [2023-11-23 21:31:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_clock_lock_of_sm501_devdata [2023-11-23 21:31:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_calc_clock [2023-11-23 21:31:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_calc_clock [2023-11-23 21:31:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_input [2023-11-23 21:31:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_input [2023-11-23 21:31:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_probe [2023-11-23 21:31:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_probe [2023-11-23 21:31:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:31:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:31:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_regs [2023-11-23 21:31:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_regs [2023-11-23 21:31:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_setup_uart_data [2023-11-23 21:31:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_setup_uart_data [2023-11-23 21:31:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_remove [2023-11-23 21:31:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_remove [2023-11-23 21:31:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:31:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_set_power [2023-11-23 21:31:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_set_power [2023-11-23 21:31:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_pin2nr [2023-11-23 21:31:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_pin2nr [2023-11-23 21:31:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure to_sm501_gpio [2023-11-23 21:31:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sm501_gpio [2023-11-23 21:31:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_unit_power [2023-11-23 21:31:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_unit_power [2023-11-23 21:31:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_dev_remove [2023-11-23 21:31:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_dev_remove [2023-11-23 21:31:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:31:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:31:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_get [2023-11-23 21:31:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_get [2023-11-23 21:31:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_clock_lock_of_sm501_devdata [2023-11-23 21:31:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_clock_lock_of_sm501_devdata [2023-11-23 21:31:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_mem [2023-11-23 21:31:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_mem [2023-11-23 21:31:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:31:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:31:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_calc_pll [2023-11-23 21:31:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_calc_pll [2023-11-23 21:31:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:31:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:31:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:31:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:31:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:31:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:31:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:31:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:31:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:31:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2023-11-23 21:31:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2023-11-23 21:31:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_subio [2023-11-23 21:31:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_subio [2023-11-23 21:31:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_register_device [2023-11-23 21:31:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_register_device [2023-11-23 21:31:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:31:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:31:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_dev [2023-11-23 21:31:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_dev [2023-11-23 21:31:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_register_chip [2023-11-23 21:31:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_register_chip [2023-11-23 21:31:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:31:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure to_sm_device [2023-11-23 21:31:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sm_device [2023-11-23 21:31:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:31:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:31:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:31:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:31:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_select_clock [2023-11-23 21:31:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_select_clock [2023-11-23 21:31:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_irq [2023-11-23 21:31:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_irq [2023-11-23 21:31:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:31:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:31:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:31:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_sync_regs [2023-11-23 21:31:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_sync_regs [2023-11-23 21:31:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2023-11-23 21:31:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2023-11-23 21:31:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:31:17,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:31:17,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:31:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_subdev [2023-11-23 21:31:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_subdev [2023-11-23 21:31:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_to_dev [2023-11-23 21:31:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_to_dev [2023-11-23 21:31:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-23 21:31:17,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-23 21:31:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:31:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:31:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-11-23 21:31:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-11-23 21:31:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:31:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_dump_gate [2023-11-23 21:31:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_dump_gate [2023-11-23 21:31:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-23 21:31:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-23 21:31:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:31:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:31:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:31:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-23 21:31:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-23 21:31:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:31:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:31:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_set_clock [2023-11-23 21:31:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_set_clock [2023-11-23 21:31:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_modify_reg [2023-11-23 21:31:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_modify_reg [2023-11-23 21:31:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:31:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:31:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:31:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:31:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:31:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:31:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_reg [2023-11-23 21:31:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_reg [2023-11-23 21:31:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:31:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:31:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:31:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-23 21:31:17,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-23 21:31:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_resume [2023-11-23 21:31:17,139 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_resume [2023-11-23 21:31:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_ensure_gpio [2023-11-23 21:31:17,140 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_ensure_gpio [2023-11-23 21:31:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:17,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:17,735 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:17,740 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:23,112 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:24,723 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:24,731 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:31:24,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:24 BoogieIcfgContainer [2023-11-23 21:31:24,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:24,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:24,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:24,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:24,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:14" (1/3) ... [2023-11-23 21:31:24,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5659b3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:24, skipping insertion in model container [2023-11-23 21:31:24,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:16" (2/3) ... [2023-11-23 21:31:24,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5659b3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:24, skipping insertion in model container [2023-11-23 21:31:24,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:24" (3/3) ... [2023-11-23 21:31:24,751 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-23 21:31:24,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:24,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:24,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:24,910 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;@3b58df95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:24,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:24,923 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) [2023-11-23 21:31:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:31:24,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:24,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:24,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:24,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash -160332915, now seen corresponding path program 1 times [2023-11-23 21:31:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:24,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701944375] [2023-11-23 21:31:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:24,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:25,884 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 21:31:25,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701944375] [2023-11-23 21:31:25,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701944375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:25,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:25,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807467479] [2023-11-23 21:31:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:25,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:25,958 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) [2023-11-23 21:31:30,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:31:32,316 WARN L539 Checker$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 21:31:34,325 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 21:31:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:34,577 INFO L93 Difference]: Finished difference Result 2513 states and 3621 transitions. [2023-11-23 21:31:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:34,580 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 [2023-11-23 21:31:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:34,637 INFO L225 Difference]: With dead ends: 2513 [2023-11-23 21:31:34,638 INFO L226 Difference]: Without dead ends: 1669 [2023-11-23 21:31:34,657 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 21:31:34,663 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 1167 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:34,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 2092 Invalid, 299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-11-23 21:31:34,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-23 21:31:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1665. [2023-11-23 21:31:34,975 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) [2023-11-23 21:31:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2363 transitions. [2023-11-23 21:31:35,008 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2363 transitions. Word has length 12 [2023-11-23 21:31:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:35,008 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2363 transitions. [2023-11-23 21:31:35,009 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) [2023-11-23 21:31:35,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2363 transitions. [2023-11-23 21:31:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:31:35,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:35,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:35,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:31:35,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:35,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 78531679, now seen corresponding path program 1 times [2023-11-23 21:31:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:35,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899038223] [2023-11-23 21:31:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:35,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:35,418 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 21:31:35,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899038223] [2023-11-23 21:31:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899038223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:35,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603004676] [2023-11-23 21:31:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:35,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:35,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:35,425 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) [2023-11-23 21:31:38,679 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 21:31:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:38,747 INFO L93 Difference]: Finished difference Result 1709 states and 2397 transitions. [2023-11-23 21:31:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:38,748 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 [2023-11-23 21:31:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:38,767 INFO L225 Difference]: With dead ends: 1709 [2023-11-23 21:31:38,767 INFO L226 Difference]: Without dead ends: 1705 [2023-11-23 21:31:38,770 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 21:31:38,772 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1038 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:38,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1174 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 21:31:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-11-23 21:31:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1703. [2023-11-23 21:31:38,968 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) [2023-11-23 21:31:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2390 transitions. [2023-11-23 21:31:38,992 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2390 transitions. Word has length 14 [2023-11-23 21:31:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:38,992 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2390 transitions. [2023-11-23 21:31:38,993 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) [2023-11-23 21:31:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2390 transitions. [2023-11-23 21:31:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:31:39,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:39,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:31:39,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:39,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1861065787, now seen corresponding path program 1 times [2023-11-23 21:31:39,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430804440] [2023-11-23 21:31:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:39,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:39,328 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 21:31:39,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:39,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430804440] [2023-11-23 21:31:39,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430804440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:39,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:39,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:39,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993012405] [2023-11-23 21:31:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:39,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:39,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:39,339 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) [2023-11-23 21:31:42,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:31:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:42,473 INFO L93 Difference]: Finished difference Result 1705 states and 2391 transitions. [2023-11-23 21:31:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:42,474 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 [2023-11-23 21:31:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:42,492 INFO L225 Difference]: With dead ends: 1705 [2023-11-23 21:31:42,493 INFO L226 Difference]: Without dead ends: 1702 [2023-11-23 21:31:42,495 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 21:31:42,496 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 [2023-11-23 21:31:42,497 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] [2023-11-23 21:31:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-11-23 21:31:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2023-11-23 21:31:42,636 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) [2023-11-23 21:31:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2388 transitions. [2023-11-23 21:31:42,656 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2388 transitions. Word has length 15 [2023-11-23 21:31:42,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:42,656 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2388 transitions. [2023-11-23 21:31:42,657 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) [2023-11-23 21:31:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2388 transitions. [2023-11-23 21:31:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:31:42,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:42,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:31:42,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:42,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1859040222, now seen corresponding path program 1 times [2023-11-23 21:31:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797969927] [2023-11-23 21:31:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:42,986 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 21:31:42,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797969927] [2023-11-23 21:31:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797969927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:42,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:42,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156392328] [2023-11-23 21:31:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:42,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:42,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:42,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:42,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:42,990 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) [2023-11-23 21:31:46,255 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 21:31:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:46,315 INFO L93 Difference]: Finished difference Result 1704 states and 2389 transitions. [2023-11-23 21:31:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:46,316 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 [2023-11-23 21:31:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:46,332 INFO L225 Difference]: With dead ends: 1704 [2023-11-23 21:31:46,333 INFO L226 Difference]: Without dead ends: 1701 [2023-11-23 21:31:46,335 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 21:31:46,336 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 [2023-11-23 21:31:46,337 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] [2023-11-23 21:31:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2023-11-23 21:31:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2023-11-23 21:31:46,474 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) [2023-11-23 21:31:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2386 transitions. [2023-11-23 21:31:46,488 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2386 transitions. Word has length 16 [2023-11-23 21:31:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:46,489 INFO L495 AbstractCegarLoop]: Abstraction has 1701 states and 2386 transitions. [2023-11-23 21:31:46,489 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) [2023-11-23 21:31:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2386 transitions. [2023-11-23 21:31:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:31:46,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:46,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:46,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:31:46,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:46,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1796242840, now seen corresponding path program 1 times [2023-11-23 21:31:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445715742] [2023-11-23 21:31:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:46,758 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 21:31:46,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445715742] [2023-11-23 21:31:46,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445715742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:46,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:46,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121562135] [2023-11-23 21:31:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:46,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:46,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:46,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:46,761 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) [2023-11-23 21:31:49,924 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 21:31:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:49,994 INFO L93 Difference]: Finished difference Result 1703 states and 2387 transitions. [2023-11-23 21:31:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:49,995 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 [2023-11-23 21:31:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:50,013 INFO L225 Difference]: With dead ends: 1703 [2023-11-23 21:31:50,014 INFO L226 Difference]: Without dead ends: 1695 [2023-11-23 21:31:50,016 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 21:31:50,021 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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 [2023-11-23 21:31:50,021 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] [2023-11-23 21:31:50,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-23 21:31:50,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2023-11-23 21:31:50,189 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) [2023-11-23 21:31:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2378 transitions. [2023-11-23 21:31:50,209 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2378 transitions. Word has length 17 [2023-11-23 21:31:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:50,210 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2378 transitions. [2023-11-23 21:31:50,210 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) [2023-11-23 21:31:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2378 transitions. [2023-11-23 21:31:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-23 21:31:50,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:50,236 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 4, 3, 3, 3, 3, 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, 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 21:31:50,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:31:50,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:50,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash -134500889, now seen corresponding path program 1 times [2023-11-23 21:31:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:50,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436849221] [2023-11-23 21:31:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:50,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 21:31:51,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:51,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436849221] [2023-11-23 21:31:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436849221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:51,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505502331] [2023-11-23 21:31:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:51,059 INFO L87 Difference]: Start difference. First operand 1695 states and 2378 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-23 21:31:55,280 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 21:31:57,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:31:59,448 WARN L539 Checker$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 21:31:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:59,534 INFO L93 Difference]: Finished difference Result 3929 states and 5491 transitions. [2023-11-23 21:31:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:59,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 242 [2023-11-23 21:31:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:59,556 INFO L225 Difference]: With dead ends: 3929 [2023-11-23 21:31:59,557 INFO L226 Difference]: Without dead ends: 2235 [2023-11-23 21:31:59,567 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 21:31:59,568 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 949 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:59,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2061 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2023-11-23 21:31:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2023-11-23 21:31:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2232. [2023-11-23 21:31:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1309 states have (on average 1.2505729564553094) internal successors, (1637), 1324 states have internal predecessors, (1637), 737 states have call successors, (737), 186 states have call predecessors, (737), 185 states have return successors, (736), 736 states have call predecessors, (736), 736 states have call successors, (736) [2023-11-23 21:31:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3110 transitions. [2023-11-23 21:31:59,852 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3110 transitions. Word has length 242 [2023-11-23 21:31:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:59,854 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3110 transitions. [2023-11-23 21:31:59,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-23 21:31:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3110 transitions. [2023-11-23 21:31:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 21:31:59,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:59,870 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-23 21:31:59,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:31:59,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:59,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 163932251, now seen corresponding path program 1 times [2023-11-23 21:31:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:59,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770257163] [2023-11-23 21:31:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:59,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-23 21:32:00,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770257163] [2023-11-23 21:32:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770257163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:32:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247986379] [2023-11-23 21:32:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:00,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:32:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:00,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:32:00,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f6bce5-94b0-422f-bff8-da9b3e4b7010/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:32:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:01,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:32:01,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-23 21:32:01,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247986379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:01,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:32:01,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-23 21:32:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855401019] [2023-11-23 21:32:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:01,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:01,808 INFO L87 Difference]: Start difference. First operand 2232 states and 3110 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)