./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI --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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- 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-5e519f3 [2022-11-03 01:55:28,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:55:28,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:55:29,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:55:29,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:55:29,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:55:29,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:55:29,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:55:29,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:55:29,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:55:29,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:55:29,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:55:29,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:55:29,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:55:29,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:55:29,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:55:29,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:55:29,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:55:29,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:55:29,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:55:29,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:55:29,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:55:29,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:55:29,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:55:29,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:55:29,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:55:29,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:55:29,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:55:29,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:55:29,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:55:29,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:55:29,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:55:29,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:55:29,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:55:29,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:55:29,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:55:29,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:55:29,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:55:29,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:55:29,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:55:29,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:55:29,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:55:29,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:55:29,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:55:29,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:55:29,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:55:29,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:55:29,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:55:29,143 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:55:29,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:55:29,143 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:55:29,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:55:29,144 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:55:29,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:55:29,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:55:29,145 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:55:29,146 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:55:29,146 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:55:29,146 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:55:29,146 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:55:29,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:55:29,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:55:29,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:55:29,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:55:29,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:55:29,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:55:29,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:55:29,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:55:29,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:55:29,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:55:29,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:55:29,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:29,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:55:29,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:55:29,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:55:29,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:55:29,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:55:29,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:55:29,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:55:29,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:55:29,152 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_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2022-11-03 01:55:29,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:55:29,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:55:29,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:55:29,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:55:29,531 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:55:29,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-03 01:55:29,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/data/1a5f7ec29/4df86cd3732a48899a6ffd1ffa365941/FLAG5869d2567 [2022-11-03 01:55:30,798 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:55:30,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-03 01:55:30,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/data/1a5f7ec29/4df86cd3732a48899a6ffd1ffa365941/FLAG5869d2567 [2022-11-03 01:55:31,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/data/1a5f7ec29/4df86cd3732a48899a6ffd1ffa365941 [2022-11-03 01:55:31,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:55:31,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:55:31,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:31,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:55:31,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:55:31,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:31" (1/1) ... [2022-11-03 01:55:31,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c91b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:31, skipping insertion in model container [2022-11-03 01:55:31,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:31" (1/1) ... [2022-11-03 01:55:31,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:55:31,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:55:32,952 WARN L230 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_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2022-11-03 01:55:34,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:34,876 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:55:35,074 WARN L230 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_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2022-11-03 01:55:35,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:35,637 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:55:35,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35 WrapperNode [2022-11-03 01:55:35,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:35,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:35,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:55:35,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:55:35,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:35,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,169 INFO L138 Inliner]: procedures = 382, calls = 4296, calls flagged for inlining = 180, calls inlined = 177, statements flattened = 8043 [2022-11-03 01:55:36,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:36,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:55:36,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:55:36,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:55:36,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:55:36,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:55:36,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:55:36,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:55:36,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (1/1) ... [2022-11-03 01:55:36,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:36,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:55:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:55:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2022-11-03 01:55:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2022-11-03 01:55:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2022-11-03 01:55:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2022-11-03 01:55:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-03 01:55:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-03 01:55:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:55:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:55:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2022-11-03 01:55:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2022-11-03 01:55:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2022-11-03 01:55:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2022-11-03 01:55:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2022-11-03 01:55:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2022-11-03 01:55:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:55:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:55:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2022-11-03 01:55:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2022-11-03 01:55:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 01:55:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 01:55:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:55:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:55:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2022-11-03 01:55:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2022-11-03 01:55:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 01:55:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 01:55:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2022-11-03 01:55:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2022-11-03 01:55:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2022-11-03 01:55:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2022-11-03 01:55:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2022-11-03 01:55:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2022-11-03 01:55:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:55:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:55:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2022-11-03 01:55:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2022-11-03 01:55:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-03 01:55:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-03 01:55:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2022-11-03 01:55:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2022-11-03 01:55:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2022-11-03 01:55:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2022-11-03 01:55:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-03 01:55:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-03 01:55:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2022-11-03 01:55:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2022-11-03 01:55:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2022-11-03 01:55:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2022-11-03 01:55:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2022-11-03 01:55:36,931 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2022-11-03 01:55:36,931 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2022-11-03 01:55:36,931 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2022-11-03 01:55:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 01:55:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 01:55:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2022-11-03 01:55:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2022-11-03 01:55:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-03 01:55:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-03 01:55:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2022-11-03 01:55:36,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2022-11-03 01:55:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:55:36,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:55:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 01:55:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 01:55:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 01:55:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 01:55:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2022-11-03 01:55:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2022-11-03 01:55:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:55:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:55:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-03 01:55:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-03 01:55:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:55:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:55:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-03 01:55:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-03 01:55:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2022-11-03 01:55:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2022-11-03 01:55:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 01:55:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 01:55:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 01:55:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 01:55:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:55:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:55:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2022-11-03 01:55:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2022-11-03 01:55:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2022-11-03 01:55:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2022-11-03 01:55:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:55:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2022-11-03 01:55:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2022-11-03 01:55:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2022-11-03 01:55:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2022-11-03 01:55:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2022-11-03 01:55:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2022-11-03 01:55:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:55:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2022-11-03 01:55:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2022-11-03 01:55:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 01:55:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 01:55:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2022-11-03 01:55:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2022-11-03 01:55:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2022-11-03 01:55:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2022-11-03 01:55:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 01:55:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2022-11-03 01:55:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2022-11-03 01:55:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:55:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:55:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 01:55:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 01:55:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:55:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:55:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2022-11-03 01:55:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2022-11-03 01:55:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2022-11-03 01:55:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2022-11-03 01:55:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2022-11-03 01:55:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2022-11-03 01:55:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:55:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:55:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2022-11-03 01:55:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2022-11-03 01:55:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:55:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:55:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2022-11-03 01:55:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2022-11-03 01:55:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2022-11-03 01:55:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2022-11-03 01:55:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:55:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 01:55:36,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 01:55:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2022-11-03 01:55:36,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2022-11-03 01:55:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 01:55:36,967 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 01:55:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:55:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:55:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2022-11-03 01:55:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2022-11-03 01:55:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:55:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2022-11-03 01:55:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2022-11-03 01:55:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2022-11-03 01:55:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2022-11-03 01:55:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2022-11-03 01:55:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2022-11-03 01:55:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:55:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 01:55:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 01:55:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2022-11-03 01:55:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2022-11-03 01:55:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2022-11-03 01:55:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2022-11-03 01:55:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:55:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:55:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 01:55:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 01:55:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 01:55:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 01:55:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2022-11-03 01:55:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2022-11-03 01:55:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2022-11-03 01:55:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2022-11-03 01:55:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-03 01:55:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-03 01:55:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 01:55:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 01:55:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2022-11-03 01:55:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2022-11-03 01:55:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2022-11-03 01:55:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2022-11-03 01:55:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2022-11-03 01:55:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2022-11-03 01:55:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 01:55:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 01:55:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:55:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 01:55:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 01:55:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2022-11-03 01:55:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2022-11-03 01:55:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2022-11-03 01:55:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2022-11-03 01:55:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2022-11-03 01:55:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2022-11-03 01:55:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:55:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:55:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2022-11-03 01:55:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2022-11-03 01:55:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-03 01:55:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2022-11-03 01:55:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2022-11-03 01:55:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2022-11-03 01:55:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2022-11-03 01:55:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2022-11-03 01:55:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2022-11-03 01:55:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:55:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:55:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 01:55:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 01:55:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-03 01:55:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-03 01:55:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2022-11-03 01:55:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2022-11-03 01:55:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:55:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:55:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:55:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 01:55:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 01:55:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2022-11-03 01:55:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2022-11-03 01:55:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:55:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:55:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 01:55:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 01:55:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2022-11-03 01:55:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2022-11-03 01:55:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2022-11-03 01:55:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2022-11-03 01:55:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 01:55:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 01:55:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2022-11-03 01:55:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2022-11-03 01:55:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2022-11-03 01:55:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2022-11-03 01:55:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2022-11-03 01:55:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2022-11-03 01:55:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 01:55:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 01:55:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 01:55:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 01:55:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:55:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:55:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2022-11-03 01:55:36,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2022-11-03 01:55:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2022-11-03 01:55:36,986 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2022-11-03 01:55:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2022-11-03 01:55:36,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2022-11-03 01:55:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2022-11-03 01:55:36,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2022-11-03 01:55:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2022-11-03 01:55:36,992 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2022-11-03 01:55:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2022-11-03 01:55:36,992 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2022-11-03 01:55:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:55:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2022-11-03 01:55:36,993 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2022-11-03 01:55:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2022-11-03 01:55:36,994 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2022-11-03 01:55:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2022-11-03 01:55:36,994 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2022-11-03 01:55:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2022-11-03 01:55:36,994 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2022-11-03 01:55:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2022-11-03 01:55:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2022-11-03 01:55:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 01:55:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 01:55:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-11-03 01:55:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:55:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:55:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-03 01:55:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-03 01:55:38,247 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:55:38,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:55:38,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:55:51,044 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:55:53,891 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:55:53,891 INFO L300 CfgBuilder]: Removed 81 assume(true) statements. [2022-11-03 01:55:53,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:53 BoogieIcfgContainer [2022-11-03 01:55:53,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:55:53,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:55:53,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:55:53,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:55:53,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:55:31" (1/3) ... [2022-11-03 01:55:53,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfa9e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:53, skipping insertion in model container [2022-11-03 01:55:53,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:35" (2/3) ... [2022-11-03 01:55:53,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfa9e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:53, skipping insertion in model container [2022-11-03 01:55:53,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:53" (3/3) ... [2022-11-03 01:55:53,911 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-03 01:55:53,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:55:53,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:55:54,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:54,095 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;@51f454c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:54,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:55:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) [2022-11-03 01:55:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 01:55:54,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:54,137 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-11-03 01:55:54,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash 540936489, now seen corresponding path program 1 times [2022-11-03 01:55:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:54,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369068547] [2022-11-03 01:55:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:54,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 01:55:55,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369068547] [2022-11-03 01:55:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369068547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:55,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:55,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:55,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891504113] [2022-11-03 01:55:55,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:55,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:55,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:55,469 INFO L87 Difference]: Start difference. First operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 01:55:59,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:02,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:03,581 INFO L93 Difference]: Finished difference Result 8979 states and 14569 transitions. [2022-11-03 01:56:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:03,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 70 [2022-11-03 01:56:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:03,682 INFO L225 Difference]: With dead ends: 8979 [2022-11-03 01:56:03,682 INFO L226 Difference]: Without dead ends: 5786 [2022-11-03 01:56:03,723 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 [2022-11-03 01:56:03,728 INFO L413 NwaCegarLoop]: 5810 mSDtfsCounter, 4557 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 10219 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:03,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 10219 Invalid, 484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 01:56:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-11-03 01:56:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5785. [2022-11-03 01:56:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 2745 states have (on average 1.2932604735883424) internal successors, (3550), 2886 states have internal predecessors, (3550), 2799 states have call successors, (2799), 241 states have call predecessors, (2799), 240 states have return successors, (2801), 2727 states have call predecessors, (2801), 2798 states have call successors, (2801) [2022-11-03 01:56:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 9150 transitions. [2022-11-03 01:56:04,489 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 9150 transitions. Word has length 70 [2022-11-03 01:56:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:04,494 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 9150 transitions. [2022-11-03 01:56:04,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 01:56:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 9150 transitions. [2022-11-03 01:56:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 01:56:04,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:04,509 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-11-03 01:56:04,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:56:04,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1939261110, now seen corresponding path program 1 times [2022-11-03 01:56:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287862904] [2022-11-03 01:56:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 01:56:05,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:05,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287862904] [2022-11-03 01:56:05,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287862904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:05,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:05,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:56:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769572349] [2022-11-03 01:56:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:05,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:56:05,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:56:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:56:05,486 INFO L87 Difference]: Start difference. First operand 5785 states and 9150 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:09,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:13,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:14,421 INFO L93 Difference]: Finished difference Result 11526 states and 18318 transitions. [2022-11-03 01:56:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:56:14,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-11-03 01:56:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:14,564 INFO L225 Difference]: With dead ends: 11526 [2022-11-03 01:56:14,564 INFO L226 Difference]: Without dead ends: 11521 [2022-11-03 01:56:14,583 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 [2022-11-03 01:56:14,584 INFO L413 NwaCegarLoop]: 5998 mSDtfsCounter, 4558 mSDsluCounter, 10858 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 16386 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:14,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 16386 Invalid, 748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 745 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 01:56:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2022-11-03 01:56:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11510. [2022-11-03 01:56:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 5453 states have (on average 1.2941500091692646) internal successors, (7057), 5736 states have internal predecessors, (7057), 5576 states have call successors, (5576), 481 states have call predecessors, (5576), 480 states have return successors, (5665), 5432 states have call predecessors, (5665), 5575 states have call successors, (5665) [2022-11-03 01:56:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 18298 transitions. [2022-11-03 01:56:16,340 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 18298 transitions. Word has length 73 [2022-11-03 01:56:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:16,343 INFO L495 AbstractCegarLoop]: Abstraction has 11510 states and 18298 transitions. [2022-11-03 01:56:16,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 18298 transitions. [2022-11-03 01:56:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 01:56:16,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:16,368 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2022-11-03 01:56:16,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:56:16,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1057543957, now seen corresponding path program 1 times [2022-11-03 01:56:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90640291] [2022-11-03 01:56:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:16,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:16,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90640291] [2022-11-03 01:56:16,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:56:16,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879022993] [2022-11-03 01:56:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:16,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:16,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:16,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:56:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 4644 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:56:18,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 01:56:18,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879022993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:18,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:18,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273569437] [2022-11-03 01:56:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:18,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:18,871 INFO L87 Difference]: Start difference. First operand 11510 states and 18298 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:56:24,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:24,897 INFO L93 Difference]: Finished difference Result 31698 states and 50618 transitions. [2022-11-03 01:56:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:24,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2022-11-03 01:56:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:25,131 INFO L225 Difference]: With dead ends: 31698 [2022-11-03 01:56:25,132 INFO L226 Difference]: Without dead ends: 20207 [2022-11-03 01:56:25,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:25,248 INFO L413 NwaCegarLoop]: 5472 mSDtfsCounter, 3504 mSDsluCounter, 4521 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3504 SdHoareTripleChecker+Valid, 9767 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:25,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3504 Valid, 9767 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 542 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 01:56:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20207 states. [2022-11-03 01:56:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20207 to 20200. [2022-11-03 01:56:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20200 states, 9325 states have (on average 1.296621983914209) internal successors, (12091), 9774 states have internal predecessors, (12091), 10018 states have call successors, (10018), 857 states have call predecessors, (10018), 856 states have return successors, (10153), 9816 states have call predecessors, (10153), 10017 states have call successors, (10153) [2022-11-03 01:56:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20200 states to 20200 states and 32262 transitions. [2022-11-03 01:56:28,223 INFO L78 Accepts]: Start accepts. Automaton has 20200 states and 32262 transitions. Word has length 130 [2022-11-03 01:56:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:28,224 INFO L495 AbstractCegarLoop]: Abstraction has 20200 states and 32262 transitions. [2022-11-03 01:56:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:56:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20200 states and 32262 transitions. [2022-11-03 01:56:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:56:28,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:28,251 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-03 01:56:28,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:28,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:28,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2054849153, now seen corresponding path program 1 times [2022-11-03 01:56:28,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:28,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123398763] [2022-11-03 01:56:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:28,719 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:56:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039678313] [2022-11-03 01:56:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:28,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:28,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:28,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:28,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:56:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:30,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 4935 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:56:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:56:31,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:31,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:31,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123398763] [2022-11-03 01:56:31,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:56:31,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039678313] [2022-11-03 01:56:31,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039678313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:31,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:31,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:56:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442920176] [2022-11-03 01:56:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:56:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:56:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:56:31,234 INFO L87 Difference]: Start difference. First operand 20200 states and 32262 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:56:38,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:42,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:51,118 INFO L93 Difference]: Finished difference Result 60549 states and 96742 transitions. [2022-11-03 01:56:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:56:51,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2022-11-03 01:56:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:51,723 INFO L225 Difference]: With dead ends: 60549 [2022-11-03 01:56:51,723 INFO L226 Difference]: Without dead ends: 40368 [2022-11-03 01:56:51,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:56:51,917 INFO L413 NwaCegarLoop]: 5789 mSDtfsCounter, 4507 mSDsluCounter, 9561 mSDsCounter, 0 mSdLazyCounter, 6540 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 14670 SdHoareTripleChecker+Invalid, 6557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6540 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:51,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4516 Valid, 14670 Invalid, 6557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6540 Invalid, 2 Unknown, 0 Unchecked, 17.5s Time] [2022-11-03 01:56:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40368 states. [2022-11-03 01:56:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40368 to 40348. [2022-11-03 01:56:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40348 states, 18625 states have (on average 1.29696644295302) internal successors, (24156), 19524 states have internal predecessors, (24156), 20006 states have call successors, (20006), 1709 states have call predecessors, (20006), 1716 states have return successors, (20307), 19602 states have call predecessors, (20307), 20005 states have call successors, (20307) [2022-11-03 01:56:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40348 states to 40348 states and 64469 transitions. [2022-11-03 01:56:57,228 INFO L78 Accepts]: Start accepts. Automaton has 40348 states and 64469 transitions. Word has length 154 [2022-11-03 01:56:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:57,230 INFO L495 AbstractCegarLoop]: Abstraction has 40348 states and 64469 transitions. [2022-11-03 01:56:57,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:56:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 40348 states and 64469 transitions. [2022-11-03 01:56:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 01:56:57,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:57,255 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-03 01:56:57,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:57,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1365914298, now seen corresponding path program 1 times [2022-11-03 01:56:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:57,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751961404] [2022-11-03 01:56:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:57,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:57,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:56:57,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468060825] [2022-11-03 01:56:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:57,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:57,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:57,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:57,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:56:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:59,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 4931 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:56:59,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:57:00,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:00,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751961404] [2022-11-03 01:57:00,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468060825] [2022-11-03 01:57:00,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468060825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:00,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:00,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837150843] [2022-11-03 01:57:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:00,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:00,127 INFO L87 Difference]: Start difference. First operand 40348 states and 64469 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:57:06,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:11,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:20,681 INFO L93 Difference]: Finished difference Result 80729 states and 128969 transitions. [2022-11-03 01:57:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:57:20,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2022-11-03 01:57:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:21,116 INFO L225 Difference]: With dead ends: 80729 [2022-11-03 01:57:21,116 INFO L226 Difference]: Without dead ends: 40400 [2022-11-03 01:57:21,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:57:21,461 INFO L413 NwaCegarLoop]: 5793 mSDtfsCounter, 4522 mSDsluCounter, 9564 mSDsCounter, 0 mSdLazyCounter, 6557 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4529 SdHoareTripleChecker+Valid, 14674 SdHoareTripleChecker+Invalid, 6573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:21,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4529 Valid, 14674 Invalid, 6573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6557 Invalid, 1 Unknown, 0 Unchecked, 17.8s Time] [2022-11-03 01:57:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40400 states. [2022-11-03 01:57:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40400 to 40382. [2022-11-03 01:57:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40382 states, 18643 states have (on average 1.2966797189293569) internal successors, (24174), 19544 states have internal predecessors, (24174), 20014 states have call successors, (20014), 1715 states have call predecessors, (20014), 1724 states have return successors, (20303), 19610 states have call predecessors, (20303), 20013 states have call successors, (20303) [2022-11-03 01:57:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40382 states to 40382 states and 64491 transitions. [2022-11-03 01:57:25,446 INFO L78 Accepts]: Start accepts. Automaton has 40382 states and 64491 transitions. Word has length 152 [2022-11-03 01:57:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 40382 states and 64491 transitions. [2022-11-03 01:57:25,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:57:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 40382 states and 64491 transitions. [2022-11-03 01:57:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 01:57:25,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:25,470 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-03 01:57:25,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:25,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash 66759724, now seen corresponding path program 1 times [2022-11-03 01:57:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:25,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043953427] [2022-11-03 01:57:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:25,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:25,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118808080] [2022-11-03 01:57:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:25,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:25,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:25,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:25,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:57:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:27,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 4929 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:57:27,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:57:28,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:28,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:28,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043953427] [2022-11-03 01:57:28,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118808080] [2022-11-03 01:57:28,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118808080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:28,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:28,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969703711] [2022-11-03 01:57:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:28,309 INFO L87 Difference]: Start difference. First operand 40382 states and 64491 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:57:36,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:41,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:49,512 INFO L93 Difference]: Finished difference Result 100913 states and 161176 transitions. [2022-11-03 01:57:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:57:49,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 151 [2022-11-03 01:57:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:50,119 INFO L225 Difference]: With dead ends: 100913 [2022-11-03 01:57:50,119 INFO L226 Difference]: Without dead ends: 60550 [2022-11-03 01:57:50,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:57:50,372 INFO L413 NwaCegarLoop]: 6507 mSDtfsCounter, 4484 mSDsluCounter, 10336 mSDsCounter, 0 mSdLazyCounter, 6682 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 16098 SdHoareTripleChecker+Invalid, 6699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6682 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:50,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 16098 Invalid, 6699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6682 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2022-11-03 01:57:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60550 states. [2022-11-03 01:57:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60550 to 60498. [2022-11-03 01:57:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60498 states, 27911 states have (on average 1.2972304826054244) internal successors, (36207), 29294 states have internal predecessors, (36207), 30002 states have call successors, (30002), 2567 states have call predecessors, (30002), 2584 states have return successors, (30433), 29364 states have call predecessors, (30433), 30001 states have call successors, (30433) [2022-11-03 01:57:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60498 states to 60498 states and 96642 transitions. [2022-11-03 01:57:55,772 INFO L78 Accepts]: Start accepts. Automaton has 60498 states and 96642 transitions. Word has length 151 [2022-11-03 01:57:55,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:55,773 INFO L495 AbstractCegarLoop]: Abstraction has 60498 states and 96642 transitions. [2022-11-03 01:57:55,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:57:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 60498 states and 96642 transitions. [2022-11-03 01:57:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-03 01:57:55,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:55,796 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-03 01:57:55,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:56,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 01:57:56,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash -389926971, now seen corresponding path program 1 times [2022-11-03 01:57:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:56,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170593059] [2022-11-03 01:57:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:56,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:56,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727497411] [2022-11-03 01:57:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:56,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:56,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:56,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:56,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:57:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:58,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 4933 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:57:58,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:57:58,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:58,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:58,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170593059] [2022-11-03 01:57:58,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:58,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727497411] [2022-11-03 01:57:58,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727497411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:58,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:58,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:58,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477752546] [2022-11-03 01:57:58,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:58,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:58,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:58,383 INFO L87 Difference]: Start difference. First operand 60498 states and 96642 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:58:05,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:07,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:09,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:13,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:24,366 INFO L93 Difference]: Finished difference Result 100879 states and 161130 transitions. [2022-11-03 01:58:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:58:24,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2022-11-03 01:58:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:24,851 INFO L225 Difference]: With dead ends: 100879 [2022-11-03 01:58:24,851 INFO L226 Difference]: Without dead ends: 60340 [2022-11-03 01:58:25,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:58:25,050 INFO L413 NwaCegarLoop]: 5793 mSDtfsCounter, 4529 mSDsluCounter, 8103 mSDsCounter, 0 mSdLazyCounter, 6547 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4536 SdHoareTripleChecker+Valid, 13217 SdHoareTripleChecker+Invalid, 6565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6547 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:25,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4536 Valid, 13217 Invalid, 6565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6547 Invalid, 3 Unknown, 0 Unchecked, 22.4s Time] [2022-11-03 01:58:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60340 states. [2022-11-03 01:58:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60340 to 60322. [2022-11-03 01:58:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60322 states, 27815 states have (on average 1.296818263526874) internal successors, (36071), 29166 states have internal predecessors, (36071), 29938 states have call successors, (29938), 2559 states have call predecessors, (29938), 2568 states have return successors, (30333), 29300 states have call predecessors, (30333), 29937 states have call successors, (30333) [2022-11-03 01:58:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60322 states to 60322 states and 96342 transitions. [2022-11-03 01:58:29,833 INFO L78 Accepts]: Start accepts. Automaton has 60322 states and 96342 transitions. Word has length 153 [2022-11-03 01:58:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:29,833 INFO L495 AbstractCegarLoop]: Abstraction has 60322 states and 96342 transitions. [2022-11-03 01:58:29,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:58:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand 60322 states and 96342 transitions. [2022-11-03 01:58:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 01:58:29,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:29,865 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-03 01:58:29,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:30,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 01:58:30,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash -679863575, now seen corresponding path program 1 times [2022-11-03 01:58:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454075721] [2022-11-03 01:58:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:30,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:30,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454075721] [2022-11-03 01:58:30,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:58:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5884077] [2022-11-03 01:58:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:30,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:30,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:30,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:30,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:58:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:32,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 4978 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:58:32,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:58:32,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:32,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5884077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:32,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:32,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:58:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268011889] [2022-11-03 01:58:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:32,571 INFO L87 Difference]: Start difference. First operand 60322 states and 96342 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:58:39,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:44,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:53,404 INFO L93 Difference]: Finished difference Result 120681 states and 192786 transitions. [2022-11-03 01:58:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:58:53,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 169 [2022-11-03 01:58:53,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:53,708 INFO L225 Difference]: With dead ends: 120681 [2022-11-03 01:58:53,708 INFO L226 Difference]: Without dead ends: 60378 [2022-11-03 01:58:53,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:58:53,942 INFO L413 NwaCegarLoop]: 4358 mSDtfsCounter, 4491 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 6330 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 7428 SdHoareTripleChecker+Invalid, 6359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:53,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 7428 Invalid, 6359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 6330 Invalid, 1 Unknown, 0 Unchecked, 16.8s Time] [2022-11-03 01:58:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60378 states. [2022-11-03 01:58:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60378 to 60378. [2022-11-03 01:58:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60378 states, 27843 states have (on average 1.2965197715763388) internal successors, (36099), 29219 states have internal predecessors, (36099), 29938 states have call successors, (29938), 2562 states have call predecessors, (29938), 2596 states have return successors, (30399), 29300 states have call predecessors, (30399), 29937 states have call successors, (30399) [2022-11-03 01:58:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60378 states to 60378 states and 96436 transitions. [2022-11-03 01:58:58,857 INFO L78 Accepts]: Start accepts. Automaton has 60378 states and 96436 transitions. Word has length 169 [2022-11-03 01:58:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:58,858 INFO L495 AbstractCegarLoop]: Abstraction has 60378 states and 96436 transitions. [2022-11-03 01:58:58,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:58:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 60378 states and 96436 transitions. [2022-11-03 01:58:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-03 01:58:58,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:58,894 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-03 01:58:58,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:59,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:59,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:59,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1732775606, now seen corresponding path program 1 times [2022-11-03 01:58:59,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:59,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162011914] [2022-11-03 01:58:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:59,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:59,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162011914] [2022-11-03 01:58:59,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:58:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598910560] [2022-11-03 01:58:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:59,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:59,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2b97ed7-0f58-4f5d-b4ab-5c9110966085/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:59:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:01,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 4974 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:59:01,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:59:01,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:01,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598910560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:01,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:01,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:59:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053505865] [2022-11-03 01:59:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:59:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:59:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:59:01,682 INFO L87 Difference]: Start difference. First operand 60378 states and 96436 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:59:09,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:14,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []