./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:26:32,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:26:32,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:26:32,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:26:32,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:26:32,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:26:32,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:26:32,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:26:32,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:26:32,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:26:32,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:26:32,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:26:32,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:26:32,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:26:32,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:26:32,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:26:32,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:26:32,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:26:32,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:26:32,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:26:32,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:26:32,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:26:32,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:26:32,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:26:32,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:26:32,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:26:32,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:26:32,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:26:32,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:26:32,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:26:32,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:26:32,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:26:32,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:26:32,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:26:32,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:26:32,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:26:32,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:26:32,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:26:32,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:26:32,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:26:32,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:26:32,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 12:26:32,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:26:32,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:26:32,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:26:32,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:26:32,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:26:32,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:26:32,135 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:26:32,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:26:32,135 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:26:32,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:26:32,136 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:26:32,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:26:32,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:26:32,136 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:26:32,136 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:26:32,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:26:32,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:26:32,137 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:26:32,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:26:32,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:26:32,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:26:32,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:26:32,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:26:32,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:26:32,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:26:32,139 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:26:32,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-12-14 12:26:32,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:26:32,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:26:32,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:26:32,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:26:32,343 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:26:32,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-12-14 12:26:34,864 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:26:35,204 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:26:35,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-12-14 12:26:35,229 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/data/903015677/b7ddfef338bc46998c3a1980fadb4ba2/FLAG801d40cab [2022-12-14 12:26:35,433 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/data/903015677/b7ddfef338bc46998c3a1980fadb4ba2 [2022-12-14 12:26:35,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:26:35,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:26:35,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:26:35,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:26:35,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:26:35,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:26:35" (1/1) ... [2022-12-14 12:26:35,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298e13bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:35, skipping insertion in model container [2022-12-14 12:26:35,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:26:35" (1/1) ... [2022-12-14 12:26:35,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:26:35,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:26:35,943 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-14 12:26:36,001 WARN L623 FunctionHandler]: Unknown extern function acpi_evaluate_integer [2022-12-14 12:26:36,006 WARN L623 FunctionHandler]: Unknown extern function acpi_evaluate_integer [2022-12-14 12:26:36,012 WARN L623 FunctionHandler]: Unknown extern function acpi_evaluate_object [2022-12-14 12:26:36,016 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 12:26:36,018 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,022 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 12:26:36,023 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,026 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,027 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,028 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,029 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,030 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,032 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,033 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,035 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,035 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,036 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,038 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,041 WARN L623 FunctionHandler]: Unknown extern function single_open [2022-12-14 12:26:36,045 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,046 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,047 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,047 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,048 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,049 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,049 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,050 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,051 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,051 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,052 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,052 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,052 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,055 WARN L623 FunctionHandler]: Unknown extern function single_open [2022-12-14 12:26:36,059 WARN L623 FunctionHandler]: Unknown extern function debugfs_create_dir [2022-12-14 12:26:36,060 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,060 WARN L623 FunctionHandler]: Unknown extern function debugfs_create_file [2022-12-14 12:26:36,061 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,061 WARN L623 FunctionHandler]: Unknown extern function debugfs_create_file [2022-12-14 12:26:36,062 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,065 WARN L623 FunctionHandler]: Unknown extern function debugfs_remove_recursive [2022-12-14 12:26:36,068 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,069 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,077 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,078 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,085 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,093 WARN L623 FunctionHandler]: Unknown extern function rfkill_set_hw_state [2022-12-14 12:26:36,097 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,098 WARN L623 FunctionHandler]: Unknown extern function rfkill_alloc [2022-12-14 12:26:36,100 WARN L623 FunctionHandler]: Unknown extern function rfkill_init_sw_state [2022-12-14 12:26:36,100 WARN L623 FunctionHandler]: Unknown extern function rfkill_init_sw_state [2022-12-14 12:26:36,101 WARN L623 FunctionHandler]: Unknown extern function rfkill_register [2022-12-14 12:26:36,101 WARN L623 FunctionHandler]: Unknown extern function rfkill_destroy [2022-12-14 12:26:36,104 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,105 WARN L623 FunctionHandler]: Unknown extern function rfkill_unregister [2022-12-14 12:26:36,105 WARN L623 FunctionHandler]: Unknown extern function rfkill_destroy [2022-12-14 12:26:36,108 WARN L623 FunctionHandler]: Unknown extern function platform_device_alloc [2022-12-14 12:26:36,109 WARN L623 FunctionHandler]: Unknown extern function platform_device_add [2022-12-14 12:26:36,109 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_group [2022-12-14 12:26:36,110 WARN L623 FunctionHandler]: Unknown extern function platform_device_del [2022-12-14 12:26:36,110 WARN L623 FunctionHandler]: Unknown extern function platform_device_put [2022-12-14 12:26:36,113 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-14 12:26:36,113 WARN L623 FunctionHandler]: Unknown extern function platform_device_unregister [2022-12-14 12:26:36,117 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,118 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_setup [2022-12-14 12:26:36,118 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,119 WARN L623 FunctionHandler]: Unknown extern function input_register_device [2022-12-14 12:26:36,119 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,119 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_free [2022-12-14 12:26:36,120 WARN L623 FunctionHandler]: Unknown extern function input_free_device [2022-12-14 12:26:36,122 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_free [2022-12-14 12:26:36,123 WARN L623 FunctionHandler]: Unknown extern function input_unregister_device [2022-12-14 12:26:36,125 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_report_event [2022-12-14 12:26:36,142 WARN L623 FunctionHandler]: Unknown extern function backlight_device_register [2022-12-14 12:26:36,143 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,147 WARN L623 FunctionHandler]: Unknown extern function backlight_device_unregister [2022-12-14 12:26:36,154 WARN L623 FunctionHandler]: Unknown extern function backlight_force_update [2022-12-14 12:26:36,157 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,158 WARN L623 FunctionHandler]: Unknown extern function i8042_command [2022-12-14 12:26:36,162 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-14 12:26:36,164 WARN L623 FunctionHandler]: Unknown extern function acpi_video_backlight_support [2022-12-14 12:26:36,165 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 12:26:36,168 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,168 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-14 12:26:36,169 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 12:26:36,171 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,173 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,179 WARN L623 FunctionHandler]: Unknown extern function acpi_bus_register_driver [2022-12-14 12:26:36,182 WARN L623 FunctionHandler]: Unknown extern function acpi_bus_unregister_driver [2022-12-14 12:26:36,229 WARN L623 FunctionHandler]: Unknown extern function single_release [2022-12-14 12:26:36,229 WARN L623 FunctionHandler]: Unknown extern function seq_read [2022-12-14 12:26:36,230 WARN L623 FunctionHandler]: Unknown extern function seq_lseek [2022-12-14 12:26:36,231 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_suspend_late_2 [2022-12-14 12:26:36,232 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_restore_early_2 [2022-12-14 12:26:36,232 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_resume_early_2 [2022-12-14 12:26:36,232 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_thaw_early_2 [2022-12-14 12:26:36,233 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_resume_noirq_2 [2022-12-14 12:26:36,233 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_freeze_noirq_2 [2022-12-14 12:26:36,233 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_prepare_2 [2022-12-14 12:26:36,234 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_freeze_2 [2022-12-14 12:26:36,234 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_freeze_late_2 [2022-12-14 12:26:36,234 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_thaw_noirq_2 [2022-12-14 12:26:36,235 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_poweroff_2 [2022-12-14 12:26:36,235 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_poweroff_noirq_2 [2022-12-14 12:26:36,235 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_poweroff_late_2 [2022-12-14 12:26:36,236 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_restore_noirq_2 [2022-12-14 12:26:36,236 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_suspend_2 [2022-12-14 12:26:36,236 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_suspend_noirq_2 [2022-12-14 12:26:36,237 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_complete_2 [2022-12-14 12:26:36,237 WARN L623 FunctionHandler]: Unknown extern function single_release [2022-12-14 12:26:36,238 WARN L623 FunctionHandler]: Unknown extern function seq_read [2022-12-14 12:26:36,238 WARN L623 FunctionHandler]: Unknown extern function seq_lseek [2022-12-14 12:26:36,242 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,243 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,243 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,243 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 12:26:36,244 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,244 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,244 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,245 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,245 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,245 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,248 WARN L237 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_7f48f94b-479a-4892-a912-f22bf06a8ba9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-12-14 12:26:36,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:26:36,346 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:26:36,400 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-14 12:26:36,404 WARN L623 FunctionHandler]: Unknown extern function acpi_evaluate_integer [2022-12-14 12:26:36,405 WARN L623 FunctionHandler]: Unknown extern function acpi_evaluate_integer [2022-12-14 12:26:36,407 WARN L623 FunctionHandler]: Unknown extern function acpi_evaluate_object [2022-12-14 12:26:36,408 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 12:26:36,409 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,410 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 12:26:36,411 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,411 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,412 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,413 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,413 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,414 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,414 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,415 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,416 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,416 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,417 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,417 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,418 WARN L623 FunctionHandler]: Unknown extern function single_open [2022-12-14 12:26:36,419 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,419 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,436 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,436 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,437 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,437 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,438 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,438 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,438 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,439 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,439 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,439 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,440 WARN L623 FunctionHandler]: Unknown extern function seq_printf [2022-12-14 12:26:36,440 WARN L623 FunctionHandler]: Unknown extern function single_open [2022-12-14 12:26:36,441 WARN L623 FunctionHandler]: Unknown extern function debugfs_create_dir [2022-12-14 12:26:36,441 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,442 WARN L623 FunctionHandler]: Unknown extern function debugfs_create_file [2022-12-14 12:26:36,442 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,443 WARN L623 FunctionHandler]: Unknown extern function debugfs_create_file [2022-12-14 12:26:36,443 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,444 WARN L623 FunctionHandler]: Unknown extern function debugfs_remove_recursive [2022-12-14 12:26:36,445 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,445 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,447 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,447 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 12:26:36,450 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,452 WARN L623 FunctionHandler]: Unknown extern function rfkill_set_hw_state [2022-12-14 12:26:36,453 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,454 WARN L623 FunctionHandler]: Unknown extern function rfkill_alloc [2022-12-14 12:26:36,455 WARN L623 FunctionHandler]: Unknown extern function rfkill_init_sw_state [2022-12-14 12:26:36,455 WARN L623 FunctionHandler]: Unknown extern function rfkill_init_sw_state [2022-12-14 12:26:36,456 WARN L623 FunctionHandler]: Unknown extern function rfkill_register [2022-12-14 12:26:36,456 WARN L623 FunctionHandler]: Unknown extern function rfkill_destroy [2022-12-14 12:26:36,457 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,457 WARN L623 FunctionHandler]: Unknown extern function rfkill_unregister [2022-12-14 12:26:36,457 WARN L623 FunctionHandler]: Unknown extern function rfkill_destroy [2022-12-14 12:26:36,458 WARN L623 FunctionHandler]: Unknown extern function platform_device_alloc [2022-12-14 12:26:36,458 WARN L623 FunctionHandler]: Unknown extern function platform_device_add [2022-12-14 12:26:36,459 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_group [2022-12-14 12:26:36,459 WARN L623 FunctionHandler]: Unknown extern function platform_device_del [2022-12-14 12:26:36,459 WARN L623 FunctionHandler]: Unknown extern function platform_device_put [2022-12-14 12:26:36,460 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-14 12:26:36,460 WARN L623 FunctionHandler]: Unknown extern function platform_device_unregister [2022-12-14 12:26:36,461 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,462 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_setup [2022-12-14 12:26:36,462 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,463 WARN L623 FunctionHandler]: Unknown extern function input_register_device [2022-12-14 12:26:36,463 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,463 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_free [2022-12-14 12:26:36,463 WARN L623 FunctionHandler]: Unknown extern function input_free_device [2022-12-14 12:26:36,464 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_free [2022-12-14 12:26:36,464 WARN L623 FunctionHandler]: Unknown extern function input_unregister_device [2022-12-14 12:26:36,464 WARN L623 FunctionHandler]: Unknown extern function sparse_keymap_report_event [2022-12-14 12:26:36,468 WARN L623 FunctionHandler]: Unknown extern function backlight_device_register [2022-12-14 12:26:36,469 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,470 WARN L623 FunctionHandler]: Unknown extern function backlight_device_unregister [2022-12-14 12:26:36,471 WARN L623 FunctionHandler]: Unknown extern function backlight_force_update [2022-12-14 12:26:36,472 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,473 WARN L623 FunctionHandler]: Unknown extern function i8042_command [2022-12-14 12:26:36,474 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-14 12:26:36,475 WARN L623 FunctionHandler]: Unknown extern function acpi_video_backlight_support [2022-12-14 12:26:36,476 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 12:26:36,477 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,477 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-14 12:26:36,477 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 12:26:36,478 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-14 12:26:36,479 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 12:26:36,481 WARN L623 FunctionHandler]: Unknown extern function acpi_bus_register_driver [2022-12-14 12:26:36,481 WARN L623 FunctionHandler]: Unknown extern function acpi_bus_unregister_driver [2022-12-14 12:26:36,484 WARN L623 FunctionHandler]: Unknown extern function single_release [2022-12-14 12:26:36,484 WARN L623 FunctionHandler]: Unknown extern function seq_read [2022-12-14 12:26:36,485 WARN L623 FunctionHandler]: Unknown extern function seq_lseek [2022-12-14 12:26:36,486 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_suspend_late_2 [2022-12-14 12:26:36,486 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_restore_early_2 [2022-12-14 12:26:36,487 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_resume_early_2 [2022-12-14 12:26:36,487 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_thaw_early_2 [2022-12-14 12:26:36,487 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_resume_noirq_2 [2022-12-14 12:26:36,488 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_freeze_noirq_2 [2022-12-14 12:26:36,488 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_prepare_2 [2022-12-14 12:26:36,488 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_freeze_2 [2022-12-14 12:26:36,489 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_freeze_late_2 [2022-12-14 12:26:36,489 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_thaw_noirq_2 [2022-12-14 12:26:36,489 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_poweroff_2 [2022-12-14 12:26:36,490 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_poweroff_noirq_2 [2022-12-14 12:26:36,490 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_poweroff_late_2 [2022-12-14 12:26:36,490 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_restore_noirq_2 [2022-12-14 12:26:36,491 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_suspend_2 [2022-12-14 12:26:36,491 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_suspend_noirq_2 [2022-12-14 12:26:36,491 WARN L623 FunctionHandler]: Unknown extern function ldv_ideapad_pm_complete_2 [2022-12-14 12:26:36,492 WARN L623 FunctionHandler]: Unknown extern function single_release [2022-12-14 12:26:36,492 WARN L623 FunctionHandler]: Unknown extern function seq_read [2022-12-14 12:26:36,492 WARN L623 FunctionHandler]: Unknown extern function seq_lseek [2022-12-14 12:26:36,495 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,495 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,495 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,496 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 12:26:36,496 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,496 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,496 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,497 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 12:26:36,497 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,497 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 12:26:36,498 WARN L237 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_7f48f94b-479a-4892-a912-f22bf06a8ba9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-12-14 12:26:36,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:26:36,550 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:26:36,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36 WrapperNode [2022-12-14 12:26:36,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:26:36,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:26:36,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:26:36,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:26:36,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,653 INFO L138 Inliner]: procedures = 196, calls = 1013, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2559 [2022-12-14 12:26:36,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:26:36,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:26:36,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:26:36,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:26:36,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,750 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:26:36,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:26:36,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:26:36,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:26:36,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (1/1) ... [2022-12-14 12:26:36,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:26:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:36,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:26:36,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:26:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 12:26:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2022-12-14 12:26:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2022-12-14 12:26:36,833 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-12-14 12:26:36,833 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 12:26:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2022-12-14 12:26:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-12-14 12:26:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-14 12:26:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-14 12:26:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-14 12:26:36,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-14 12:26:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2022-12-14 12:26:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2022-12-14 12:26:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-12-14 12:26:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2022-12-14 12:26:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-12-14 12:26:36,835 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-12-14 12:26:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2022-12-14 12:26:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2022-12-14 12:26:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-12-14 12:26:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2022-12-14 12:26:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-12-14 12:26:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-12-14 12:26:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:26:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 12:26:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 12:26:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-12-14 12:26:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-12-14 12:26:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2022-12-14 12:26:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2022-12-14 12:26:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-12-14 12:26:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:26:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2022-12-14 12:26:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2022-12-14 12:26:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2022-12-14 12:26:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-12-14 12:26:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2022-12-14 12:26:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2022-12-14 12:26:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2022-12-14 12:26:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2022-12-14 12:26:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2022-12-14 12:26:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2022-12-14 12:26:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:26:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:26:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:26:37,179 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:26:37,181 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:26:47,311 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:26:48,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:26:48,078 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 12:26:48,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:26:48 BoogieIcfgContainer [2022-12-14 12:26:48,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:26:48,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:26:48,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:26:48,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:26:48,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:26:35" (1/3) ... [2022-12-14 12:26:48,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdd1570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:26:48, skipping insertion in model container [2022-12-14 12:26:48,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:36" (2/3) ... [2022-12-14 12:26:48,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdd1570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:26:48, skipping insertion in model container [2022-12-14 12:26:48,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:26:48" (3/3) ... [2022-12-14 12:26:48,086 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-12-14 12:26:48,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:26:48,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:26:48,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:26:48,149 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=LoopsAndPotentialCycles, 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;@298dac42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:26:48,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:26:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 473 states, 316 states have (on average 1.4778481012658229) internal successors, (467), 335 states have internal predecessors, (467), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2022-12-14 12:26:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:26:48,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:48,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:48,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:26:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -539176569, now seen corresponding path program 1 times [2022-12-14 12:26:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:48,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492654655] [2022-12-14 12:26:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:48,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:48,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:48,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492654655] [2022-12-14 12:26:48,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492654655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:48,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:48,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541001020] [2022-12-14 12:26:48,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:48,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:48,731 INFO L87 Difference]: Start difference. First operand has 473 states, 316 states have (on average 1.4778481012658229) internal successors, (467), 335 states have internal predecessors, (467), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:50,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:26:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:51,324 INFO L93 Difference]: Finished difference Result 1401 states and 2081 transitions. [2022-12-14 12:26:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:51,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 12:26:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:51,341 INFO L225 Difference]: With dead ends: 1401 [2022-12-14 12:26:51,341 INFO L226 Difference]: Without dead ends: 927 [2022-12-14 12:26:51,347 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 [2022-12-14 12:26:51,349 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 655 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:51,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1289 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 12:26:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-12-14 12:26:51,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 923. [2022-12-14 12:26:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 621 states have (on average 1.4669887278582932) internal successors, (911), 649 states have internal predecessors, (911), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-12-14 12:26:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1354 transitions. [2022-12-14 12:26:51,432 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1354 transitions. Word has length 18 [2022-12-14 12:26:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:51,432 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1354 transitions. [2022-12-14 12:26:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1354 transitions. [2022-12-14 12:26:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 12:26:51,434 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:51,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:51,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:26:51,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:26:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2067817922, now seen corresponding path program 1 times [2022-12-14 12:26:51,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:51,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819497920] [2022-12-14 12:26:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:51,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:51,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819497920] [2022-12-14 12:26:51,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819497920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:51,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:51,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8954168] [2022-12-14 12:26:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:51,621 INFO L87 Difference]: Start difference. First operand 923 states and 1354 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:53,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:26:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:53,896 INFO L93 Difference]: Finished difference Result 925 states and 1355 transitions. [2022-12-14 12:26:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:53,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 12:26:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:53,900 INFO L225 Difference]: With dead ends: 925 [2022-12-14 12:26:53,900 INFO L226 Difference]: Without dead ends: 922 [2022-12-14 12:26:53,901 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 [2022-12-14 12:26:53,902 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 670 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:53,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 589 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 12:26:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-12-14 12:26:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-12-14 12:26:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 621 states have (on average 1.465378421900161) internal successors, (910), 648 states have internal predecessors, (910), 224 states have call successors, (224), 77 states have call predecessors, (224), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-12-14 12:26:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1352 transitions. [2022-12-14 12:26:53,960 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1352 transitions. Word has length 20 [2022-12-14 12:26:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:53,960 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1352 transitions. [2022-12-14 12:26:53,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1352 transitions. [2022-12-14 12:26:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 12:26:53,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:53,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:53,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:26:53,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:26:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -322407621, now seen corresponding path program 1 times [2022-12-14 12:26:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:53,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436454979] [2022-12-14 12:26:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:53,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:54,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436454979] [2022-12-14 12:26:54,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436454979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:54,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:54,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:54,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011546698] [2022-12-14 12:26:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:54,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:54,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:54,102 INFO L87 Difference]: Start difference. First operand 922 states and 1352 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:56,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:26:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:56,342 INFO L93 Difference]: Finished difference Result 924 states and 1353 transitions. [2022-12-14 12:26:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 12:26:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:56,346 INFO L225 Difference]: With dead ends: 924 [2022-12-14 12:26:56,346 INFO L226 Difference]: Without dead ends: 921 [2022-12-14 12:26:56,347 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 [2022-12-14 12:26:56,348 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:56,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 587 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 12:26:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-12-14 12:26:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2022-12-14 12:26:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 621 states have (on average 1.463768115942029) internal successors, (909), 647 states have internal predecessors, (909), 223 states have call successors, (223), 77 states have call predecessors, (223), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-12-14 12:26:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1350 transitions. [2022-12-14 12:26:56,382 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1350 transitions. Word has length 21 [2022-12-14 12:26:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:56,383 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1350 transitions. [2022-12-14 12:26:56,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1350 transitions. [2022-12-14 12:26:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 12:26:56,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:56,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:56,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:26:56,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:26:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1404950555, now seen corresponding path program 1 times [2022-12-14 12:26:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:56,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751637407] [2022-12-14 12:26:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:56,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751637407] [2022-12-14 12:26:56,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751637407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:56,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:56,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039538917] [2022-12-14 12:26:56,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:56,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:56,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:56,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:56,523 INFO L87 Difference]: Start difference. First operand 921 states and 1350 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:58,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:26:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:58,785 INFO L93 Difference]: Finished difference Result 923 states and 1351 transitions. [2022-12-14 12:26:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:58,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 12:26:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:58,790 INFO L225 Difference]: With dead ends: 923 [2022-12-14 12:26:58,790 INFO L226 Difference]: Without dead ends: 920 [2022-12-14 12:26:58,790 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 [2022-12-14 12:26:58,791 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 664 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:58,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 585 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 12:26:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-12-14 12:26:58,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2022-12-14 12:26:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 621 states have (on average 1.462157809983897) internal successors, (908), 646 states have internal predecessors, (908), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-12-14 12:26:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1348 transitions. [2022-12-14 12:26:58,824 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1348 transitions. Word has length 22 [2022-12-14 12:26:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:58,824 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1348 transitions. [2022-12-14 12:26:58,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1348 transitions. [2022-12-14 12:26:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:26:58,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:58,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:58,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:26:58,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:26:58,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:58,826 INFO L85 PathProgramCache]: Analyzing trace with hash -604038274, now seen corresponding path program 1 times [2022-12-14 12:26:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:58,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055846920] [2022-12-14 12:26:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:58,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:58,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:58,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055846920] [2022-12-14 12:26:58,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055846920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:58,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:58,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187969075] [2022-12-14 12:26:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:58,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:58,961 INFO L87 Difference]: Start difference. First operand 920 states and 1348 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:27:00,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:01,206 INFO L93 Difference]: Finished difference Result 922 states and 1349 transitions. [2022-12-14 12:27:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:27:01,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 12:27:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:01,212 INFO L225 Difference]: With dead ends: 922 [2022-12-14 12:27:01,212 INFO L226 Difference]: Without dead ends: 919 [2022-12-14 12:27:01,213 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 [2022-12-14 12:27:01,214 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:01,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 583 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 12:27:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-12-14 12:27:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2022-12-14 12:27:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 621 states have (on average 1.460547504025765) internal successors, (907), 645 states have internal predecessors, (907), 221 states have call successors, (221), 77 states have call predecessors, (221), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-12-14 12:27:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1346 transitions. [2022-12-14 12:27:01,265 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1346 transitions. Word has length 23 [2022-12-14 12:27:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:01,266 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1346 transitions. [2022-12-14 12:27:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:27:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1346 transitions. [2022-12-14 12:27:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 12:27:01,267 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:01,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:01,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:27:01,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1545556472, now seen corresponding path program 1 times [2022-12-14 12:27:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:01,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676443701] [2022-12-14 12:27:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:01,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:27:01,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:01,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676443701] [2022-12-14 12:27:01,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676443701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:01,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:27:01,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:27:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184059505] [2022-12-14 12:27:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:27:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:27:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:27:01,403 INFO L87 Difference]: Start difference. First operand 919 states and 1346 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:27:03,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:03,836 INFO L93 Difference]: Finished difference Result 2289 states and 3302 transitions. [2022-12-14 12:27:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:27:03,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 12:27:03,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:03,845 INFO L225 Difference]: With dead ends: 2289 [2022-12-14 12:27:03,846 INFO L226 Difference]: Without dead ends: 1365 [2022-12-14 12:27:03,850 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 [2022-12-14 12:27:03,851 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 631 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:03,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 911 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:27:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-12-14 12:27:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1359. [2022-12-14 12:27:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 894 states have (on average 1.4116331096196868) internal successors, (1262), 926 states have internal predecessors, (1262), 330 states have call successors, (330), 135 states have call predecessors, (330), 134 states have return successors, (334), 321 states have call predecessors, (334), 328 states have call successors, (334) [2022-12-14 12:27:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1926 transitions. [2022-12-14 12:27:03,919 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1926 transitions. Word has length 24 [2022-12-14 12:27:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:03,919 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1926 transitions. [2022-12-14 12:27:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:27:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1926 transitions. [2022-12-14 12:27:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-14 12:27:03,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:03,924 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:03,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:27:03,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash -797589955, now seen corresponding path program 1 times [2022-12-14 12:27:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:03,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353249739] [2022-12-14 12:27:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 12:27:04,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:04,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353249739] [2022-12-14 12:27:04,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353249739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:04,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:27:04,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:27:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217265309] [2022-12-14 12:27:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:04,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:27:04,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:04,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:27:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:27:04,253 INFO L87 Difference]: Start difference. First operand 1359 states and 1926 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:27:06,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:06,721 INFO L93 Difference]: Finished difference Result 2454 states and 3507 transitions. [2022-12-14 12:27:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:27:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2022-12-14 12:27:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:06,725 INFO L225 Difference]: With dead ends: 2454 [2022-12-14 12:27:06,725 INFO L226 Difference]: Without dead ends: 1096 [2022-12-14 12:27:06,728 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 [2022-12-14 12:27:06,728 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 298 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:06,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1181 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:27:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-12-14 12:27:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1096. [2022-12-14 12:27:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 744 states have (on average 1.461021505376344) internal successors, (1087), 762 states have internal predecessors, (1087), 246 states have call successors, (246), 106 states have call predecessors, (246), 105 states have return successors, (247), 241 states have call predecessors, (247), 244 states have call successors, (247) [2022-12-14 12:27:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1580 transitions. [2022-12-14 12:27:06,769 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1580 transitions. Word has length 154 [2022-12-14 12:27:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:06,769 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1580 transitions. [2022-12-14 12:27:06,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:27:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1580 transitions. [2022-12-14 12:27:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-14 12:27:06,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:06,773 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:06,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:27:06,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1263245807, now seen corresponding path program 1 times [2022-12-14 12:27:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:06,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028226057] [2022-12-14 12:27:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-14 12:27:07,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:07,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028226057] [2022-12-14 12:27:07,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028226057] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:07,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:27:07,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:27:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298314522] [2022-12-14 12:27:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:07,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:27:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:27:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:27:07,192 INFO L87 Difference]: Start difference. First operand 1096 states and 1580 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:27:09,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:09,660 INFO L93 Difference]: Finished difference Result 1997 states and 2879 transitions. [2022-12-14 12:27:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:27:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2022-12-14 12:27:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:09,665 INFO L225 Difference]: With dead ends: 1997 [2022-12-14 12:27:09,665 INFO L226 Difference]: Without dead ends: 1108 [2022-12-14 12:27:09,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:27:09,668 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 7 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:09,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1716 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:27:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-12-14 12:27:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1104. [2022-12-14 12:27:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 750 states have (on average 1.4573333333333334) internal successors, (1093), 769 states have internal predecessors, (1093), 247 states have call successors, (247), 106 states have call predecessors, (247), 106 states have return successors, (249), 242 states have call predecessors, (249), 245 states have call successors, (249) [2022-12-14 12:27:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1589 transitions. [2022-12-14 12:27:09,712 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1589 transitions. Word has length 169 [2022-12-14 12:27:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:09,712 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1589 transitions. [2022-12-14 12:27:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:27:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1589 transitions. [2022-12-14 12:27:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 12:27:09,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:09,716 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:09,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:27:09,717 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:09,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:09,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1602372743, now seen corresponding path program 1 times [2022-12-14 12:27:09,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:09,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587600424] [2022-12-14 12:27:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-14 12:27:10,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:10,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587600424] [2022-12-14 12:27:10,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587600424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:10,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:27:10,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:27:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945880751] [2022-12-14 12:27:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:27:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:27:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:27:10,102 INFO L87 Difference]: Start difference. First operand 1104 states and 1589 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 12:27:12,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:12,555 INFO L93 Difference]: Finished difference Result 2015 states and 2901 transitions. [2022-12-14 12:27:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:27:12,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 175 [2022-12-14 12:27:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:12,560 INFO L225 Difference]: With dead ends: 2015 [2022-12-14 12:27:12,560 INFO L226 Difference]: Without dead ends: 1118 [2022-12-14 12:27:12,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:27:12,562 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 7 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:12,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1721 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:27:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-12-14 12:27:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1109. [2022-12-14 12:27:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 754 states have (on average 1.4549071618037135) internal successors, (1097), 774 states have internal predecessors, (1097), 248 states have call successors, (248), 106 states have call predecessors, (248), 106 states have return successors, (250), 243 states have call predecessors, (250), 246 states have call successors, (250) [2022-12-14 12:27:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1595 transitions. [2022-12-14 12:27:12,603 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1595 transitions. Word has length 175 [2022-12-14 12:27:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:12,604 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1595 transitions. [2022-12-14 12:27:12,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 12:27:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1595 transitions. [2022-12-14 12:27:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-14 12:27:12,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:12,607 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:12,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:27:12,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2065891289, now seen corresponding path program 1 times [2022-12-14 12:27:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113526975] [2022-12-14 12:27:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-12-14 12:27:12,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113526975] [2022-12-14 12:27:12,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113526975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:12,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:27:12,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:27:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369153566] [2022-12-14 12:27:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:27:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:27:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:27:12,989 INFO L87 Difference]: Start difference. First operand 1109 states and 1595 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 12:27:15,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:15,393 INFO L93 Difference]: Finished difference Result 2027 states and 2917 transitions. [2022-12-14 12:27:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:27:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 192 [2022-12-14 12:27:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:15,397 INFO L225 Difference]: With dead ends: 2027 [2022-12-14 12:27:15,397 INFO L226 Difference]: Without dead ends: 1125 [2022-12-14 12:27:15,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:27:15,400 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 7 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:15,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1725 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:27:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-12-14 12:27:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1114. [2022-12-14 12:27:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 758 states have (on average 1.4525065963060686) internal successors, (1101), 779 states have internal predecessors, (1101), 249 states have call successors, (249), 106 states have call predecessors, (249), 106 states have return successors, (251), 244 states have call predecessors, (251), 247 states have call successors, (251) [2022-12-14 12:27:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1601 transitions. [2022-12-14 12:27:15,438 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1601 transitions. Word has length 192 [2022-12-14 12:27:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:15,439 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1601 transitions. [2022-12-14 12:27:15,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 12:27:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1601 transitions. [2022-12-14 12:27:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-12-14 12:27:15,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:15,442 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:15,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 12:27:15,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash 20792532, now seen corresponding path program 1 times [2022-12-14 12:27:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:15,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742452801] [2022-12-14 12:27:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:15,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-12-14 12:27:15,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:15,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742452801] [2022-12-14 12:27:15,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742452801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:15,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:27:15,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:27:15,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993990097] [2022-12-14 12:27:15,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:15,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:27:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:27:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:27:15,833 INFO L87 Difference]: Start difference. First operand 1114 states and 1601 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 12:27:17,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:18,208 INFO L93 Difference]: Finished difference Result 2077 states and 2993 transitions. [2022-12-14 12:27:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:27:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 194 [2022-12-14 12:27:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:18,212 INFO L225 Difference]: With dead ends: 2077 [2022-12-14 12:27:18,212 INFO L226 Difference]: Without dead ends: 1170 [2022-12-14 12:27:18,214 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 [2022-12-14 12:27:18,214 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 22 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:18,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1146 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 12:27:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-12-14 12:27:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1118. [2022-12-14 12:27:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 762 states have (on average 1.4501312335958005) internal successors, (1105), 783 states have internal predecessors, (1105), 249 states have call successors, (249), 106 states have call predecessors, (249), 106 states have return successors, (251), 244 states have call predecessors, (251), 247 states have call successors, (251) [2022-12-14 12:27:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1605 transitions. [2022-12-14 12:27:18,254 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1605 transitions. Word has length 194 [2022-12-14 12:27:18,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:18,255 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1605 transitions. [2022-12-14 12:27:18,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 12:27:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1605 transitions. [2022-12-14 12:27:18,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-14 12:27:18,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:18,258 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:18,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 12:27:18,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 201928320, now seen corresponding path program 1 times [2022-12-14 12:27:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:18,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066033067] [2022-12-14 12:27:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:18,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-12-14 12:27:18,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:18,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066033067] [2022-12-14 12:27:18,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066033067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:27:18,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345466279] [2022-12-14 12:27:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:27:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:27:18,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:27:18,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:27:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:19,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 4425 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:27:19,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:27:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-12-14 12:27:19,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:27:19,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345466279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:27:19,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:27:19,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 12:27:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999099126] [2022-12-14 12:27:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:27:19,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:27:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:27:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:27:19,646 INFO L87 Difference]: Start difference. First operand 1118 states and 1605 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 12:27:21,669 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 [] [2022-12-14 12:27:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:21,991 INFO L93 Difference]: Finished difference Result 1423 states and 1991 transitions. [2022-12-14 12:27:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:27:21,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 201 [2022-12-14 12:27:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:21,996 INFO L225 Difference]: With dead ends: 1423 [2022-12-14 12:27:21,997 INFO L226 Difference]: Without dead ends: 1111 [2022-12-14 12:27:21,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:27:21,998 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 314 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:21,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1351 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 12:27:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-12-14 12:27:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1105. [2022-12-14 12:27:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 755 states have (on average 1.4516556291390728) internal successors, (1096), 773 states have internal predecessors, (1096), 245 states have call successors, (245), 106 states have call predecessors, (245), 104 states have return successors, (243), 239 states have call predecessors, (243), 243 states have call successors, (243) [2022-12-14 12:27:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1584 transitions. [2022-12-14 12:27:22,039 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1584 transitions. Word has length 201 [2022-12-14 12:27:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:22,040 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1584 transitions. [2022-12-14 12:27:22,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 12:27:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1584 transitions. [2022-12-14 12:27:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-12-14 12:27:22,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:22,046 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:22,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:27:22,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 12:27:22,247 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash -902964997, now seen corresponding path program 1 times [2022-12-14 12:27:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:22,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796858551] [2022-12-14 12:27:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:22,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-12-14 12:27:22,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:22,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796858551] [2022-12-14 12:27:22,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796858551] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:27:22,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557478107] [2022-12-14 12:27:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:22,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:27:22,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:27:22,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:27:22,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:27:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:24,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 6866 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:27:24,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:27:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 208 proven. 1 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2022-12-14 12:27:24,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:27:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-12-14 12:27:24,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557478107] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:27:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [666841163] [2022-12-14 12:27:24,309 INFO L159 IcfgInterpreter]: Started Sifa with 139 locations of interest [2022-12-14 12:27:24,309 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:27:24,313 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 12:27:24,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:27:24,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-12-14 12:27:24,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383531267] [2022-12-14 12:27:24,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:27:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:27:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:27:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:27:24,316 INFO L87 Difference]: Start difference. First operand 1105 states and 1584 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 5 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2022-12-14 12:27:26,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:27:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:26,938 INFO L93 Difference]: Finished difference Result 2115 states and 3043 transitions. [2022-12-14 12:27:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:27:26,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 5 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) Word has length 365 [2022-12-14 12:27:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:26,942 INFO L225 Difference]: With dead ends: 2115 [2022-12-14 12:27:26,942 INFO L226 Difference]: Without dead ends: 1217 [2022-12-14 12:27:26,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 727 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:27:26,944 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 79 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:26,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 2237 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 429 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 12:27:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-12-14 12:27:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2022-12-14 12:27:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 831 states have (on average 1.434416365824308) internal successors, (1192), 849 states have internal predecessors, (1192), 281 states have call successors, (281), 106 states have call predecessors, (281), 104 states have return successors, (279), 275 states have call predecessors, (279), 279 states have call successors, (279) [2022-12-14 12:27:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1752 transitions. [2022-12-14 12:27:26,989 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1752 transitions. Word has length 365 [2022-12-14 12:27:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:26,989 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1752 transitions. [2022-12-14 12:27:26,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 5 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2022-12-14 12:27:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1752 transitions. [2022-12-14 12:27:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-12-14 12:27:26,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:26,999 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:27:27,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:27:27,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:27:27,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:27:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1001080645, now seen corresponding path program 2 times [2022-12-14 12:27:27,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:27,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965401456] [2022-12-14 12:27:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:27,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 101 proven. 14 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2022-12-14 12:27:28,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:28,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965401456] [2022-12-14 12:27:28,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965401456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:27:28,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244430823] [2022-12-14 12:27:28,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:27:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:27:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:27:28,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:27:28,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:40:49,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 12:40:49,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:40:49,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 3137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:40:49,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:40:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-12-14 12:40:49,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:40:49,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244430823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:40:49,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:40:49,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 12:40:49,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091214825] [2022-12-14 12:40:49,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:40:49,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:40:49,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:40:49,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:40:49,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:40:49,687 INFO L87 Difference]: Start difference. First operand 1217 states and 1752 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 12:40:51,712 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 [] [2022-12-14 12:40:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:40:52,164 INFO L93 Difference]: Finished difference Result 2243 states and 3257 transitions. [2022-12-14 12:40:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:40:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 393 [2022-12-14 12:40:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:40:52,169 INFO L225 Difference]: With dead ends: 2243 [2022-12-14 12:40:52,169 INFO L226 Difference]: Without dead ends: 1233 [2022-12-14 12:40:52,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:40:52,171 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 2 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:40:52,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2275 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:40:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-12-14 12:40:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1225. [2022-12-14 12:40:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 837 states have (on average 1.4313022700119475) internal successors, (1198), 855 states have internal predecessors, (1198), 281 states have call successors, (281), 106 states have call predecessors, (281), 106 states have return successors, (306), 277 states have call predecessors, (306), 279 states have call successors, (306) [2022-12-14 12:40:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1785 transitions. [2022-12-14 12:40:52,219 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1785 transitions. Word has length 393 [2022-12-14 12:40:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:40:52,220 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1785 transitions. [2022-12-14 12:40:52,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 12:40:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1785 transitions. [2022-12-14 12:40:52,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-12-14 12:40:52,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:40:52,225 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:40:52,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:40:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 12:40:52,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:40:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:40:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 962320229, now seen corresponding path program 1 times [2022-12-14 12:40:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:40:52,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165186111] [2022-12-14 12:40:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:40:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 101 proven. 14 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2022-12-14 12:40:53,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:40:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165186111] [2022-12-14 12:40:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165186111] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:40:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084716173] [2022-12-14 12:40:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:53,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:40:53,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:40:53,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:40:53,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:40:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:54,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 7798 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:40:54,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:40:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-12-14 12:40:54,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:40:54,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084716173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:40:54,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:40:54,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-12-14 12:40:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73647773] [2022-12-14 12:40:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:40:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:40:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:40:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:40:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:40:54,765 INFO L87 Difference]: Start difference. First operand 1225 states and 1785 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-12-14 12:40:56,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 12:40:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:40:57,248 INFO L93 Difference]: Finished difference Result 2255 states and 3294 transitions. [2022-12-14 12:40:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:40:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 437 [2022-12-14 12:40:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:40:57,252 INFO L225 Difference]: With dead ends: 2255 [2022-12-14 12:40:57,252 INFO L226 Difference]: Without dead ends: 1237 [2022-12-14 12:40:57,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:40:57,254 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 2 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:40:57,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2268 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:40:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-12-14 12:40:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1229. [2022-12-14 12:40:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 841 states have (on average 1.4292508917954816) internal successors, (1202), 857 states have internal predecessors, (1202), 281 states have call successors, (281), 106 states have call predecessors, (281), 106 states have return successors, (306), 279 states have call predecessors, (306), 279 states have call successors, (306) [2022-12-14 12:40:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1789 transitions. [2022-12-14 12:40:57,300 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1789 transitions. Word has length 437 [2022-12-14 12:40:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:40:57,300 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1789 transitions. [2022-12-14 12:40:57,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-12-14 12:40:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1789 transitions. [2022-12-14 12:40:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-12-14 12:40:57,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:40:57,305 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:40:57,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:40:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 12:40:57,507 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:40:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:40:57,509 INFO L85 PathProgramCache]: Analyzing trace with hash -323501169, now seen corresponding path program 2 times [2022-12-14 12:40:57,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:40:57,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579164100] [2022-12-14 12:40:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:57,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:40:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 106 proven. 12 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-12-14 12:40:58,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:40:58,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579164100] [2022-12-14 12:40:58,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579164100] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:40:58,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590442197] [2022-12-14 12:40:58,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:40:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:40:58,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:40:58,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:40:58,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:40:59,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 12:40:59,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:40:59,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2342 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:40:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:40:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2022-12-14 12:40:59,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:40:59,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590442197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:40:59,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:40:59,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 12:40:59,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235712995] [2022-12-14 12:40:59,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:40:59,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:40:59,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:40:59,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:40:59,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:40:59,922 INFO L87 Difference]: Start difference. First operand 1229 states and 1789 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 12:41:01,947 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 [] [2022-12-14 12:41:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:41:02,228 INFO L93 Difference]: Finished difference Result 2253 states and 3282 transitions. [2022-12-14 12:41:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:41:02,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 481 [2022-12-14 12:41:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:41:02,232 INFO L225 Difference]: With dead ends: 2253 [2022-12-14 12:41:02,232 INFO L226 Difference]: Without dead ends: 1231 [2022-12-14 12:41:02,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:41:02,234 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 0 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:41:02,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1145 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 12:41:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-12-14 12:41:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2022-12-14 12:41:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 843 states have (on average 1.4282325029655991) internal successors, (1204), 859 states have internal predecessors, (1204), 281 states have call successors, (281), 106 states have call predecessors, (281), 106 states have return successors, (306), 279 states have call predecessors, (306), 279 states have call successors, (306) [2022-12-14 12:41:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1791 transitions. [2022-12-14 12:41:02,283 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1791 transitions. Word has length 481 [2022-12-14 12:41:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:41:02,284 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1791 transitions. [2022-12-14 12:41:02,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 12:41:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1791 transitions. [2022-12-14 12:41:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-12-14 12:41:02,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:41:02,288 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:41:02,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:41:02,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 12:41:02,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:41:02,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:41:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 987106309, now seen corresponding path program 1 times [2022-12-14 12:41:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:41:02,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148560391] [2022-12-14 12:41:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:41:02,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:41:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:41:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 106 proven. 12 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2022-12-14 12:41:03,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:41:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148560391] [2022-12-14 12:41:03,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148560391] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:41:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312074171] [2022-12-14 12:41:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:41:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:41:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:41:03,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:41:03,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:41:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:41:04,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 8596 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:41:04,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:41:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-12-14 12:41:04,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:41:04,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312074171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:41:04,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:41:04,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-12-14 12:41:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977641733] [2022-12-14 12:41:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:41:04,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:41:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:41:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:41:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:41:04,962 INFO L87 Difference]: Start difference. First operand 1231 states and 1791 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-12-14 12:41:06,986 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 [] [2022-12-14 12:41:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:41:07,413 INFO L93 Difference]: Finished difference Result 2267 states and 3306 transitions. [2022-12-14 12:41:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:41:07,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 483 [2022-12-14 12:41:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:41:07,418 INFO L225 Difference]: With dead ends: 2267 [2022-12-14 12:41:07,418 INFO L226 Difference]: Without dead ends: 1243 [2022-12-14 12:41:07,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:41:07,420 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 2 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:41:07,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2275 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 12:41:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-12-14 12:41:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1235. [2022-12-14 12:41:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 847 states have (on average 1.4262101534828808) internal successors, (1208), 861 states have internal predecessors, (1208), 281 states have call successors, (281), 106 states have call predecessors, (281), 106 states have return successors, (306), 281 states have call predecessors, (306), 279 states have call successors, (306) [2022-12-14 12:41:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1795 transitions. [2022-12-14 12:41:07,464 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1795 transitions. Word has length 483 [2022-12-14 12:41:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:41:07,464 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1795 transitions. [2022-12-14 12:41:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-12-14 12:41:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1795 transitions. [2022-12-14 12:41:07,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-12-14 12:41:07,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:41:07,469 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:41:07,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 12:41:07,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f48f94b-479a-4892-a912-f22bf06a8ba9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 12:41:07,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:41:07,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:41:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1035952933, now seen corresponding path program 2 times [2022-12-14 12:41:07,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:41:07,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503975716] [2022-12-14 12:41:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:41:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms