./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9 --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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- 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-6b4ec56 [2022-11-20 20:36:34,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:36:34,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:36:34,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:36:34,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:36:34,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:36:34,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:36:34,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:36:34,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:36:34,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:36:34,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:36:34,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:36:34,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:36:34,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:36:34,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:36:34,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:36:34,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:36:34,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:36:34,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:36:34,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:36:34,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:36:34,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:36:34,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:36:34,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:36:34,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:36:34,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:36:34,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:36:34,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:36:34,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:36:34,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:36:34,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:36:34,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:36:34,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:36:34,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:36:34,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:36:34,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:36:34,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:36:34,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:36:34,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:36:34,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:36:34,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:36:34,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:36:34,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:36:34,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:36:34,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:36:34,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:36:34,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:36:34,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:36:34,130 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:36:34,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:36:34,130 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:36:34,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:36:34,132 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:36:34,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:36:34,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:36:34,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:36:34,133 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:36:34,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:36:34,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:36:34,134 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:36:34,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:36:34,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:36:34,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:36:34,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:36:34,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:36:34,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:36:34,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:36:34,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:36:34,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:36:34,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:36:34,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:36:34,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:36:34,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:36:34,139 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:36:34,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:36:34,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:36:34,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:36:34,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:36:34,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:36:34,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:36:34,141 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_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2022-11-20 20:36:34,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:36:34,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:36:34,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:36:34,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:36:34,435 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:36:34,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2022-11-20 20:36:37,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:36:38,169 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:36:38,169 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2022-11-20 20:36:38,228 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/data/cdac336b9/3ddf3debdf444272b7f25d08611ddcf9/FLAG4e75f53c3 [2022-11-20 20:36:38,275 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/data/cdac336b9/3ddf3debdf444272b7f25d08611ddcf9 [2022-11-20 20:36:38,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:36:38,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:36:38,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:36:38,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:36:38,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:36:38,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:36:38" (1/1) ... [2022-11-20 20:36:38,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e2ed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:38, skipping insertion in model container [2022-11-20 20:36:38,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:36:38" (1/1) ... [2022-11-20 20:36:38,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:36:38,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:36:41,176 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2022-11-20 20:36:41,181 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2022-11-20 20:36:41,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:36:41,242 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:36:41,684 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2022-11-20 20:36:41,684 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2022-11-20 20:36:41,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:36:41,868 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:36:41,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41 WrapperNode [2022-11-20 20:36:41,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:36:41,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:36:41,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:36:41,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:36:41,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:41,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,149 INFO L138 Inliner]: procedures = 388, calls = 2133, calls flagged for inlining = 154, calls inlined = 135, statements flattened = 4308 [2022-11-20 20:36:42,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:36:42,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:36:42,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:36:42,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:36:42,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:36:42,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:36:42,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:36:42,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:36:42,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (1/1) ... [2022-11-20 20:36:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:36:42,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:36:42,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:36:42,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:36:42,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2022-11-20 20:36:42,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2022-11-20 20:36:42,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:36:42,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:36:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2022-11-20 20:36:42,519 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2022-11-20 20:36:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2022-11-20 20:36:42,519 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2022-11-20 20:36:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 20:36:42,520 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 20:36:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:36:42,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:36:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 20:36:42,520 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 20:36:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2022-11-20 20:36:42,521 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2022-11-20 20:36:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2022-11-20 20:36:42,521 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2022-11-20 20:36:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2022-11-20 20:36:42,521 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2022-11-20 20:36:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-20 20:36:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-20 20:36:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 20:36:42,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 20:36:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2022-11-20 20:36:42,523 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2022-11-20 20:36:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2022-11-20 20:36:42,524 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2022-11-20 20:36:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-20 20:36:42,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-20 20:36:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 20:36:42,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 20:36:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:36:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2022-11-20 20:36:42,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2022-11-20 20:36:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2022-11-20 20:36:42,526 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2022-11-20 20:36:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 20:36:42,526 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 20:36:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2022-11-20 20:36:42,527 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2022-11-20 20:36:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 20:36:42,527 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 20:36:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2022-11-20 20:36:42,527 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2022-11-20 20:36:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2022-11-20 20:36:42,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2022-11-20 20:36:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:36:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2022-11-20 20:36:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2022-11-20 20:36:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2022-11-20 20:36:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2022-11-20 20:36:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2022-11-20 20:36:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2022-11-20 20:36:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:36:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 20:36:42,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 20:36:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2022-11-20 20:36:42,531 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2022-11-20 20:36:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:36:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:36:42,531 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:36:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2022-11-20 20:36:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2022-11-20 20:36:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 20:36:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 20:36:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 20:36:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 20:36:42,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 20:36:42,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 20:36:42,533 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2022-11-20 20:36:42,533 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2022-11-20 20:36:42,533 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2022-11-20 20:36:42,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2022-11-20 20:36:42,534 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2022-11-20 20:36:42,534 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2022-11-20 20:36:42,534 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2022-11-20 20:36:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2022-11-20 20:36:42,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:36:42,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 20:36:42,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 20:36:42,536 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2022-11-20 20:36:42,536 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2022-11-20 20:36:42,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:36:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 20:36:42,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 20:36:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 20:36:42,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 20:36:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:36:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:36:42,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:36:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-20 20:36:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-20 20:36:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2022-11-20 20:36:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2022-11-20 20:36:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-20 20:36:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-20 20:36:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-20 20:36:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-20 20:36:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 20:36:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 20:36:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 20:36:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 20:36:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2022-11-20 20:36:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2022-11-20 20:36:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2022-11-20 20:36:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2022-11-20 20:36:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 20:36:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 20:36:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 20:36:42,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 20:36:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2022-11-20 20:36:42,547 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2022-11-20 20:36:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:36:42,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:36:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2022-11-20 20:36:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2022-11-20 20:36:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:36:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:36:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:36:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:36:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2022-11-20 20:36:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2022-11-20 20:36:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-20 20:36:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-20 20:36:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2022-11-20 20:36:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2022-11-20 20:36:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2022-11-20 20:36:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2022-11-20 20:36:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 20:36:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 20:36:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2022-11-20 20:36:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2022-11-20 20:36:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2022-11-20 20:36:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2022-11-20 20:36:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 20:36:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 20:36:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:36:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:36:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2022-11-20 20:36:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2022-11-20 20:36:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:36:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-20 20:36:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-20 20:36:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-20 20:36:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-20 20:36:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 20:36:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 20:36:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 20:36:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 20:36:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 20:36:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 20:36:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-20 20:36:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-20 20:36:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 20:36:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 20:36:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2022-11-20 20:36:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2022-11-20 20:36:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-20 20:36:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-20 20:36:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 20:36:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 20:36:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 20:36:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 20:36:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 20:36:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 20:36:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 20:36:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 20:36:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:36:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-20 20:36:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-20 20:36:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2022-11-20 20:36:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2022-11-20 20:36:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-20 20:36:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-20 20:36:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:36:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:36:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2022-11-20 20:36:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2022-11-20 20:36:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2022-11-20 20:36:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2022-11-20 20:36:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2022-11-20 20:36:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2022-11-20 20:36:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 20:36:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 20:36:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2022-11-20 20:36:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2022-11-20 20:36:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2022-11-20 20:36:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2022-11-20 20:36:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2022-11-20 20:36:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2022-11-20 20:36:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 20:36:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 20:36:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:36:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-20 20:36:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-20 20:36:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 20:36:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 20:36:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2022-11-20 20:36:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2022-11-20 20:36:43,282 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:36:43,286 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:36:43,583 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:36:48,162 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 20:36:49,149 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:36:50,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:36:50,266 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:36:50,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:36:50 BoogieIcfgContainer [2022-11-20 20:36:50,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:36:50,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:36:50,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:36:50,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:36:50,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:36:38" (1/3) ... [2022-11-20 20:36:50,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185c9232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:36:50, skipping insertion in model container [2022-11-20 20:36:50,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:41" (2/3) ... [2022-11-20 20:36:50,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185c9232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:36:50, skipping insertion in model container [2022-11-20 20:36:50,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:36:50" (3/3) ... [2022-11-20 20:36:50,284 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2022-11-20 20:36:50,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:36:50,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:36:50,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:36:50,414 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;@45209fdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:36:50,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:36:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 807 states have (on average 1.241635687732342) internal successors, (1002), 831 states have internal predecessors, (1002), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) [2022-11-20 20:36:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 20:36:50,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:36:50,471 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:36:50,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:36:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:36:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1168220015, now seen corresponding path program 1 times [2022-11-20 20:36:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:36:50,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263142628] [2022-11-20 20:36:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:36:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:36:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:36:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 20:36:51,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:36:51,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263142628] [2022-11-20 20:36:51,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263142628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:36:51,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:36:51,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:36:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511780987] [2022-11-20 20:36:51,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:36:51,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:36:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:36:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:36:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:36:51,484 INFO L87 Difference]: Start difference. First operand has 1559 states, 807 states have (on average 1.241635687732342) internal successors, (1002), 831 states have internal predecessors, (1002), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 20:36:53,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:36:55,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:36:56,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:00,139 INFO L93 Difference]: Finished difference Result 4334 states and 6480 transitions. [2022-11-20 20:37:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:00,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 127 [2022-11-20 20:37:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:00,182 INFO L225 Difference]: With dead ends: 4334 [2022-11-20 20:37:00,182 INFO L226 Difference]: Without dead ends: 2729 [2022-11-20 20:37:00,197 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 [2022-11-20 20:37:00,201 INFO L413 NwaCegarLoop]: 2720 mSDtfsCounter, 1852 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:00,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 4818 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 20:37:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2022-11-20 20:37:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2725. [2022-11-20 20:37:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 1416 states have (on average 1.2337570621468927) internal successors, (1747), 1462 states have internal predecessors, (1747), 1143 states have call successors, (1143), 166 states have call predecessors, (1143), 165 states have return successors, (1160), 1116 states have call predecessors, (1160), 1143 states have call successors, (1160) [2022-11-20 20:37:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4050 transitions. [2022-11-20 20:37:00,562 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4050 transitions. Word has length 127 [2022-11-20 20:37:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:00,564 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 4050 transitions. [2022-11-20 20:37:00,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 20:37:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4050 transitions. [2022-11-20 20:37:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-20 20:37:00,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:00,590 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-20 20:37:00,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:37:00,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:00,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1945908145, now seen corresponding path program 1 times [2022-11-20 20:37:00,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:00,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852241480] [2022-11-20 20:37:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:00,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-20 20:37:01,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:01,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852241480] [2022-11-20 20:37:01,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852241480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:01,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:01,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782985970] [2022-11-20 20:37:01,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:01,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:01,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:01,007 INFO L87 Difference]: Start difference. First operand 2725 states and 4050 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 20:37:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:06,841 INFO L93 Difference]: Finished difference Result 7256 states and 10798 transitions. [2022-11-20 20:37:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 181 [2022-11-20 20:37:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:06,885 INFO L225 Difference]: With dead ends: 7256 [2022-11-20 20:37:06,885 INFO L226 Difference]: Without dead ends: 4542 [2022-11-20 20:37:06,901 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 [2022-11-20 20:37:06,903 INFO L413 NwaCegarLoop]: 2567 mSDtfsCounter, 1571 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:06,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 4597 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 20:37:06,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2022-11-20 20:37:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4538. [2022-11-20 20:37:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 2346 states have (on average 1.2310315430520034) internal successors, (2888), 2414 states have internal predecessors, (2888), 1913 states have call successors, (1913), 279 states have call predecessors, (1913), 278 states have return successors, (1930), 1876 states have call predecessors, (1930), 1913 states have call successors, (1930) [2022-11-20 20:37:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 6731 transitions. [2022-11-20 20:37:07,297 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 6731 transitions. Word has length 181 [2022-11-20 20:37:07,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:07,300 INFO L495 AbstractCegarLoop]: Abstraction has 4538 states and 6731 transitions. [2022-11-20 20:37:07,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 20:37:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 6731 transitions. [2022-11-20 20:37:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 20:37:07,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:07,317 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:37:07,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1863447993, now seen corresponding path program 1 times [2022-11-20 20:37:07,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:07,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799486571] [2022-11-20 20:37:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:07,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-20 20:37:07,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:07,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799486571] [2022-11-20 20:37:07,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799486571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:07,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:07,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764081146] [2022-11-20 20:37:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:07,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:07,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:07,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:07,974 INFO L87 Difference]: Start difference. First operand 4538 states and 6731 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 20:37:09,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:10,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:12,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:15,364 INFO L93 Difference]: Finished difference Result 10882 states and 16159 transitions. [2022-11-20 20:37:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 225 [2022-11-20 20:37:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:15,415 INFO L225 Difference]: With dead ends: 10882 [2022-11-20 20:37:15,415 INFO L226 Difference]: Without dead ends: 6355 [2022-11-20 20:37:15,444 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 [2022-11-20 20:37:15,449 INFO L413 NwaCegarLoop]: 3507 mSDtfsCounter, 1580 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:15,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 5521 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 20:37:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6355 states. [2022-11-20 20:37:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6351. [2022-11-20 20:37:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6351 states, 3275 states have (on average 1.2299236641221374) internal successors, (4028), 3365 states have internal predecessors, (4028), 2683 states have call successors, (2683), 393 states have call predecessors, (2683), 392 states have return successors, (2700), 2636 states have call predecessors, (2700), 2683 states have call successors, (2700) [2022-11-20 20:37:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6351 states to 6351 states and 9411 transitions. [2022-11-20 20:37:15,895 INFO L78 Accepts]: Start accepts. Automaton has 6351 states and 9411 transitions. Word has length 225 [2022-11-20 20:37:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:15,895 INFO L495 AbstractCegarLoop]: Abstraction has 6351 states and 9411 transitions. [2022-11-20 20:37:15,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 20:37:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states and 9411 transitions. [2022-11-20 20:37:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-20 20:37:15,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:15,919 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:15,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:37:15,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1344316217, now seen corresponding path program 1 times [2022-11-20 20:37:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:15,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887187828] [2022-11-20 20:37:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-20 20:37:16,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:16,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887187828] [2022-11-20 20:37:16,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887187828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:16,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:16,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892272953] [2022-11-20 20:37:16,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:16,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:16,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:16,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:16,719 INFO L87 Difference]: Start difference. First operand 6351 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 20:37:18,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:22,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:23,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:23,335 INFO L93 Difference]: Finished difference Result 14682 states and 21752 transitions. [2022-11-20 20:37:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 287 [2022-11-20 20:37:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:23,402 INFO L225 Difference]: With dead ends: 14682 [2022-11-20 20:37:23,403 INFO L226 Difference]: Without dead ends: 8342 [2022-11-20 20:37:23,442 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 [2022-11-20 20:37:23,443 INFO L413 NwaCegarLoop]: 3578 mSDtfsCounter, 2013 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:23,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2013 Valid, 5305 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 20:37:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2022-11-20 20:37:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 8338. [2022-11-20 20:37:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8338 states, 4298 states have (on average 1.2291763610981852) internal successors, (5283), 4415 states have internal predecessors, (5283), 3514 states have call successors, (3514), 527 states have call predecessors, (3514), 525 states have return successors, (3531), 3453 states have call predecessors, (3531), 3514 states have call successors, (3531) [2022-11-20 20:37:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8338 states to 8338 states and 12328 transitions. [2022-11-20 20:37:24,177 INFO L78 Accepts]: Start accepts. Automaton has 8338 states and 12328 transitions. Word has length 287 [2022-11-20 20:37:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:24,179 INFO L495 AbstractCegarLoop]: Abstraction has 8338 states and 12328 transitions. [2022-11-20 20:37:24,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-20 20:37:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 8338 states and 12328 transitions. [2022-11-20 20:37:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-20 20:37:24,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:24,207 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:37:24,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 479222024, now seen corresponding path program 1 times [2022-11-20 20:37:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:24,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693402651] [2022-11-20 20:37:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-20 20:37:25,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693402651] [2022-11-20 20:37:25,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693402651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:25,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:25,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726857023] [2022-11-20 20:37:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:25,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:25,035 INFO L87 Difference]: Start difference. First operand 8338 states and 12328 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-20 20:37:27,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:37:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:31,778 INFO L93 Difference]: Finished difference Result 24619 states and 36411 transitions. [2022-11-20 20:37:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:31,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 314 [2022-11-20 20:37:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:31,893 INFO L225 Difference]: With dead ends: 24619 [2022-11-20 20:37:31,894 INFO L226 Difference]: Without dead ends: 16292 [2022-11-20 20:37:31,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:31,946 INFO L413 NwaCegarLoop]: 2640 mSDtfsCounter, 1992 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:31,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 4687 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 20:37:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16292 states. [2022-11-20 20:37:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16292 to 16290. [2022-11-20 20:37:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16290 states, 8398 states have (on average 1.2305310788282924) internal successors, (10334), 8621 states have internal predecessors, (10334), 6859 states have call successors, (6859), 1035 states have call predecessors, (6859), 1032 states have return successors, (6895), 6743 states have call predecessors, (6895), 6859 states have call successors, (6895) [2022-11-20 20:37:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16290 states to 16290 states and 24088 transitions. [2022-11-20 20:37:33,457 INFO L78 Accepts]: Start accepts. Automaton has 16290 states and 24088 transitions. Word has length 314 [2022-11-20 20:37:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:33,458 INFO L495 AbstractCegarLoop]: Abstraction has 16290 states and 24088 transitions. [2022-11-20 20:37:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-20 20:37:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 16290 states and 24088 transitions. [2022-11-20 20:37:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-20 20:37:33,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:33,489 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:33,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:37:33,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1807927802, now seen corresponding path program 1 times [2022-11-20 20:37:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:33,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966854754] [2022-11-20 20:37:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2022-11-20 20:37:35,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:35,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966854754] [2022-11-20 20:37:35,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966854754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:35,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853965294] [2022-11-20 20:37:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:35,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:35,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:35,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:35,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:37:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:36,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 4486 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 20:37:36,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-20 20:37:56,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:37:56,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853965294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:56,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:37:56,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-20 20:37:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974641284] [2022-11-20 20:37:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:56,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:37:56,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:37:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:37:56,966 INFO L87 Difference]: Start difference. First operand 16290 states and 24088 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) [2022-11-20 20:38:00,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:01,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:03,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:04,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:05,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:11,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:16,285 INFO L93 Difference]: Finished difference Result 28635 states and 42369 transitions. [2022-11-20 20:38:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:38:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) Word has length 318 [2022-11-20 20:38:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:16,561 INFO L225 Difference]: With dead ends: 28635 [2022-11-20 20:38:16,561 INFO L226 Difference]: Without dead ends: 28633 [2022-11-20 20:38:16,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:38:16,581 INFO L413 NwaCegarLoop]: 3064 mSDtfsCounter, 1502 mSDsluCounter, 8759 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 11823 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:16,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 11823 Invalid, 2031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2022-11-20 20:38:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28633 states. [2022-11-20 20:38:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28633 to 28613. [2022-11-20 20:38:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28613 states, 14706 states have (on average 1.2301101591187271) internal successors, (18090), 15144 states have internal predecessors, (18090), 12092 states have call successors, (12092), 1836 states have call predecessors, (12092), 1814 states have return successors, (12164), 11820 states have call predecessors, (12164), 12092 states have call successors, (12164) [2022-11-20 20:38:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28613 states to 28613 states and 42346 transitions. [2022-11-20 20:38:19,830 INFO L78 Accepts]: Start accepts. Automaton has 28613 states and 42346 transitions. Word has length 318 [2022-11-20 20:38:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:19,831 INFO L495 AbstractCegarLoop]: Abstraction has 28613 states and 42346 transitions. [2022-11-20 20:38:19,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) [2022-11-20 20:38:19,832 INFO L276 IsEmpty]: Start isEmpty. Operand 28613 states and 42346 transitions. [2022-11-20 20:38:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-20 20:38:19,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:19,893 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:19,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:38:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592352c5-43aa-4c9f-bf59-eda21c3ac1df/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:38:20,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:38:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -930513183, now seen corresponding path program 1 times [2022-11-20 20:38:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:38:20,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158762813] [2022-11-20 20:38:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:38:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-11-20 20:38:20,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:38:20,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158762813] [2022-11-20 20:38:20,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158762813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:20,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:20,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:38:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272903031] [2022-11-20 20:38:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:38:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:20,727 INFO L87 Difference]: Start difference. First operand 28613 states and 42346 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-20 20:38:23,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:25,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:26,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:31,047 INFO L93 Difference]: Finished difference Result 63529 states and 94127 transitions. [2022-11-20 20:38:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 329 [2022-11-20 20:38:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:31,278 INFO L225 Difference]: With dead ends: 63529 [2022-11-20 20:38:31,279 INFO L226 Difference]: Without dead ends: 34927 [2022-11-20 20:38:31,425 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 [2022-11-20 20:38:31,426 INFO L413 NwaCegarLoop]: 3508 mSDtfsCounter, 1590 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:31,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 5530 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 20:38:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34927 states. [2022-11-20 20:38:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34927 to 34917. [2022-11-20 20:38:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34917 states, 17940 states have (on average 1.2305462653288741) internal successors, (22076), 18464 states have internal predecessors, (22076), 14768 states have call successors, (14768), 2234 states have call predecessors, (14768), 2208 states have return successors, (14840), 14446 states have call predecessors, (14840), 14768 states have call successors, (14840) [2022-11-20 20:38:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34917 states to 34917 states and 51684 transitions. [2022-11-20 20:38:34,902 INFO L78 Accepts]: Start accepts. Automaton has 34917 states and 51684 transitions. Word has length 329 [2022-11-20 20:38:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:34,903 INFO L495 AbstractCegarLoop]: Abstraction has 34917 states and 51684 transitions. [2022-11-20 20:38:34,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-20 20:38:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 34917 states and 51684 transitions. [2022-11-20 20:38:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-20 20:38:34,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:34,962 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:34,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:38:34,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:38:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash -225967561, now seen corresponding path program 1 times [2022-11-20 20:38:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:38:34,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194656285] [2022-11-20 20:38:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:34,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:38:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2022-11-20 20:38:35,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:38:35,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194656285] [2022-11-20 20:38:35,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194656285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:35,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:35,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:38:35,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144082547] [2022-11-20 20:38:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:38:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:35,448 INFO L87 Difference]: Start difference. First operand 34917 states and 51684 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-20 20:38:37,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:39,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:45,875 INFO L93 Difference]: Finished difference Result 69608 states and 102448 transitions. [2022-11-20 20:38:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:45,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 368 [2022-11-20 20:38:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:46,095 INFO L225 Difference]: With dead ends: 69608 [2022-11-20 20:38:46,095 INFO L226 Difference]: Without dead ends: 34702 [2022-11-20 20:38:46,451 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 [2022-11-20 20:38:46,453 INFO L413 NwaCegarLoop]: 2652 mSDtfsCounter, 1990 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:46,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 4680 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-20 20:38:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34702 states. [2022-11-20 20:38:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34702 to 34681. [2022-11-20 20:38:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34681 states, 18442 states have (on average 1.2229693091855547) internal successors, (22554), 18996 states have internal predecessors, (22554), 13934 states have call successors, (13934), 2342 states have call predecessors, (13934), 2304 states have return successors, (14072), 13556 states have call predecessors, (14072), 13934 states have call successors, (14072) [2022-11-20 20:38:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34681 states to 34681 states and 50560 transitions. [2022-11-20 20:38:49,462 INFO L78 Accepts]: Start accepts. Automaton has 34681 states and 50560 transitions. Word has length 368 [2022-11-20 20:38:49,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:49,463 INFO L495 AbstractCegarLoop]: Abstraction has 34681 states and 50560 transitions. [2022-11-20 20:38:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-20 20:38:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 34681 states and 50560 transitions. [2022-11-20 20:38:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-20 20:38:49,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:49,475 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:38:49,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:38:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -235637361, now seen corresponding path program 1 times [2022-11-20 20:38:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:38:49,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537398600] [2022-11-20 20:38:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:38:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2022-11-20 20:38:50,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:38:50,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537398600] [2022-11-20 20:38:50,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537398600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:50,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:50,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:38:50,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774529463] [2022-11-20 20:38:50,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:50,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:38:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:38:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:38:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:38:50,421 INFO L87 Difference]: Start difference. First operand 34681 states and 50560 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:38:52,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:55,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:38:59,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:00,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:07,064 INFO L93 Difference]: Finished difference Result 75859 states and 110546 transitions. [2022-11-20 20:39:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:39:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 365 [2022-11-20 20:39:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:07,284 INFO L225 Difference]: With dead ends: 75859 [2022-11-20 20:39:07,284 INFO L226 Difference]: Without dead ends: 41207 [2022-11-20 20:39:07,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:39:07,471 INFO L413 NwaCegarLoop]: 3574 mSDtfsCounter, 1696 mSDsluCounter, 9166 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 12740 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 12740 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-11-20 20:39:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41207 states. [2022-11-20 20:39:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41207 to 41169. [2022-11-20 20:39:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41169 states, 21852 states have (on average 1.2245103423027641) internal successors, (26758), 22587 states have internal predecessors, (26758), 16511 states have call successors, (16511), 2845 states have call predecessors, (16511), 2805 states have return successors, (16667), 16010 states have call predecessors, (16667), 16511 states have call successors, (16667) [2022-11-20 20:39:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41169 states to 41169 states and 59936 transitions. [2022-11-20 20:39:10,605 INFO L78 Accepts]: Start accepts. Automaton has 41169 states and 59936 transitions. Word has length 365 [2022-11-20 20:39:10,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:10,606 INFO L495 AbstractCegarLoop]: Abstraction has 41169 states and 59936 transitions. [2022-11-20 20:39:10,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:39:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 41169 states and 59936 transitions. [2022-11-20 20:39:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-20 20:39:10,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:10,617 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:10,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:39:10,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1894431984, now seen corresponding path program 1 times [2022-11-20 20:39:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:39:10,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486531098] [2022-11-20 20:39:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:39:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2022-11-20 20:39:11,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:39:11,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486531098] [2022-11-20 20:39:11,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486531098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:11,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:11,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:39:11,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551967910] [2022-11-20 20:39:11,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:11,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:39:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:39:11,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:39:11,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:39:11,095 INFO L87 Difference]: Start difference. First operand 41169 states and 59936 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:39:15,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:17,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:26,956 INFO L93 Difference]: Finished difference Result 87783 states and 127882 transitions. [2022-11-20 20:39:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:39:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 367 [2022-11-20 20:39:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:27,168 INFO L225 Difference]: With dead ends: 87783 [2022-11-20 20:39:27,168 INFO L226 Difference]: Without dead ends: 46643 [2022-11-20 20:39:27,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:39:27,302 INFO L413 NwaCegarLoop]: 3514 mSDtfsCounter, 1574 mSDsluCounter, 9050 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 12564 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:27,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 12564 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-11-20 20:39:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46643 states. [2022-11-20 20:39:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46643 to 46605. [2022-11-20 20:39:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46605 states, 24718 states have (on average 1.2237236022331903) internal successors, (30248), 25528 states have internal predecessors, (30248), 18710 states have call successors, (18710), 3208 states have call predecessors, (18710), 3176 states have return successors, (18878), 18174 states have call predecessors, (18878), 18710 states have call successors, (18878) [2022-11-20 20:39:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46605 states to 46605 states and 67836 transitions. [2022-11-20 20:39:30,591 INFO L78 Accepts]: Start accepts. Automaton has 46605 states and 67836 transitions. Word has length 367 [2022-11-20 20:39:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:30,592 INFO L495 AbstractCegarLoop]: Abstraction has 46605 states and 67836 transitions. [2022-11-20 20:39:30,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:39:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 46605 states and 67836 transitions. [2022-11-20 20:39:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-20 20:39:30,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:30,604 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:39:30,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:30,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1658880514, now seen corresponding path program 1 times [2022-11-20 20:39:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:39:30,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770920150] [2022-11-20 20:39:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:39:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2022-11-20 20:39:31,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:39:31,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770920150] [2022-11-20 20:39:31,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770920150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:31,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:31,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:39:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376621819] [2022-11-20 20:39:31,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:31,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:39:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:39:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:39:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:39:31,096 INFO L87 Difference]: Start difference. First operand 46605 states and 67836 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:39:33,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:36,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:39,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:43,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:45,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:39:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:50,091 INFO L93 Difference]: Finished difference Result 98571 states and 143634 transitions. [2022-11-20 20:39:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:39:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 367 [2022-11-20 20:39:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:50,366 INFO L225 Difference]: With dead ends: 98571 [2022-11-20 20:39:50,366 INFO L226 Difference]: Without dead ends: 51995 [2022-11-20 20:39:50,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:39:50,687 INFO L413 NwaCegarLoop]: 3513 mSDtfsCounter, 1564 mSDsluCounter, 9054 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 12567 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:50,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 12567 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-11-20 20:39:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51995 states. [2022-11-20 20:39:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51995 to 51957. [2022-11-20 20:39:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51957 states, 27548 states have (on average 1.223391897778423) internal successors, (33702), 28433 states have internal predecessors, (33702), 20897 states have call successors, (20897), 3547 states have call predecessors, (20897), 3511 states have return successors, (21065), 20314 states have call predecessors, (21065), 20897 states have call successors, (21065) [2022-11-20 20:39:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51957 states to 51957 states and 75664 transitions. [2022-11-20 20:39:54,207 INFO L78 Accepts]: Start accepts. Automaton has 51957 states and 75664 transitions. Word has length 367 [2022-11-20 20:39:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:54,208 INFO L495 AbstractCegarLoop]: Abstraction has 51957 states and 75664 transitions. [2022-11-20 20:39:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:39:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 51957 states and 75664 transitions. [2022-11-20 20:39:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-20 20:39:54,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:54,219 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:54,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:39:54,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:54,220 INFO L85 PathProgramCache]: Analyzing trace with hash -986643301, now seen corresponding path program 1 times [2022-11-20 20:39:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:39:54,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992526689] [2022-11-20 20:39:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:54,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:39:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-11-20 20:39:54,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:39:54,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992526689] [2022-11-20 20:39:54,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992526689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:54,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:54,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:39:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754715400] [2022-11-20 20:39:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:54,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:39:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:39:54,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:39:54,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:39:54,584 INFO L87 Difference]: Start difference. First operand 51957 states and 75664 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:40:00,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:40:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:40:04,903 INFO L93 Difference]: Finished difference Result 109923 states and 160124 transitions. [2022-11-20 20:40:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:40:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 379 [2022-11-20 20:40:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:40:05,281 INFO L225 Difference]: With dead ends: 109923 [2022-11-20 20:40:05,281 INFO L226 Difference]: Without dead ends: 57995 [2022-11-20 20:40:05,719 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 [2022-11-20 20:40:05,720 INFO L413 NwaCegarLoop]: 3317 mSDtfsCounter, 1692 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 5342 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:40:05,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 5342 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 20:40:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57995 states. [2022-11-20 20:40:09,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57995 to 57981. [2022-11-20 20:40:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57981 states, 30702 states have (on average 1.2255227672464335) internal successors, (37626), 31760 states have internal predecessors, (37626), 23332 states have call successors, (23332), 3992 states have call predecessors, (23332), 3946 states have return successors, (23500), 22618 states have call predecessors, (23500), 23332 states have call successors, (23500) [2022-11-20 20:40:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57981 states to 57981 states and 84458 transitions. [2022-11-20 20:40:09,735 INFO L78 Accepts]: Start accepts. Automaton has 57981 states and 84458 transitions. Word has length 379 [2022-11-20 20:40:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:40:09,736 INFO L495 AbstractCegarLoop]: Abstraction has 57981 states and 84458 transitions. [2022-11-20 20:40:09,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 20:40:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 57981 states and 84458 transitions. [2022-11-20 20:40:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-11-20 20:40:09,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:40:09,748 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:40:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:40:09,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:40:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:40:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash 53821421, now seen corresponding path program 1 times [2022-11-20 20:40:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:40:09,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013258361] [2022-11-20 20:40:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms