./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-ethernet-intel-igbvf-igbvf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW --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 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 --- 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-4e7fbc6 [2022-11-23 15:07:24,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:07:24,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:07:24,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:07:24,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:07:24,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:07:24,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:07:24,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:07:24,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:07:24,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:07:24,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:07:24,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:07:24,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:07:24,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:07:24,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:07:24,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:07:24,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:07:24,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:07:24,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:07:24,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:07:24,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:07:24,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:07:24,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:07:24,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:07:24,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:07:24,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:07:24,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:07:24,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:07:24,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:07:24,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:07:24,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:07:24,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:07:24,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:07:24,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:07:24,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:07:24,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:07:24,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:07:24,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:07:24,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:07:24,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:07:24,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:07:24,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:07:25,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:07:25,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:07:25,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:07:25,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:07:25,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:07:25,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:07:25,011 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:07:25,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:07:25,011 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:07:25,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:07:25,013 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:07:25,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:07:25,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:07:25,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:07:25,014 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:07:25,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:07:25,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:07:25,015 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:07:25,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:07:25,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:07:25,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:07:25,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:07:25,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:07:25,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:07:25,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:07:25,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:07:25,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:07:25,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:07:25,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:07:25,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:07:25,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:07:25,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:07:25,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:07:25,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:07:25,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:07:25,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:07:25,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:07:25,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:07:25,021 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_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 [2022-11-23 15:07:25,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:07:25,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:07:25,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:07:25,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:07:25,338 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:07:25,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-23 15:07:28,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:07:29,130 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:07:29,130 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-23 15:07:29,207 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/data/37b6c700d/b3ca6791647d4d8aae4b39617db0beb8/FLAG72123dd2d [2022-11-23 15:07:29,225 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/data/37b6c700d/b3ca6791647d4d8aae4b39617db0beb8 [2022-11-23 15:07:29,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:07:29,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:07:29,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:07:29,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:07:29,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:07:29,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:29" (1/1) ... [2022-11-23 15:07:29,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3043318e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:29, skipping insertion in model container [2022-11-23 15:07:29,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:29" (1/1) ... [2022-11-23 15:07:29,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:07:29,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:07:34,118 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_7cd394a3-b581-4277-9372-943609f480fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2022-11-23 15:07:34,125 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_7cd394a3-b581-4277-9372-943609f480fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2022-11-23 15:07:34,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:07:34,255 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:07:34,837 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_7cd394a3-b581-4277-9372-943609f480fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2022-11-23 15:07:34,838 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_7cd394a3-b581-4277-9372-943609f480fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2022-11-23 15:07:34,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:07:35,232 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:07:35,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35 WrapperNode [2022-11-23 15:07:35,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:07:35,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:07:35,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:07:35,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:07:35,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,610 INFO L138 Inliner]: procedures = 639, calls = 3635, calls flagged for inlining = 316, calls inlined = 281, statements flattened = 8259 [2022-11-23 15:07:35,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:07:35,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:07:35,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:07:35,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:07:35,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:35,991 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:36,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:36,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:07:36,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:07:36,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:07:36,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:07:36,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (1/1) ... [2022-11-23 15:07:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:07:36,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:07:36,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:07:36,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:07:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-23 15:07:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-23 15:07:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:07:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:07:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:07:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:07:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-23 15:07:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-23 15:07:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:07:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:07:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:07:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:07:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-23 15:07:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-23 15:07:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_function_pointers_vf [2022-11-23 15:07:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_function_pointers_vf [2022-11-23 15:07:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-23 15:07:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-23 15:07:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 15:07:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 15:07:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:07:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:07:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:07:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:07:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_alloc_rx_buffers [2022-11-23 15:07:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_alloc_rx_buffers [2022-11-23 15:07:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 15:07:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 15:07:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_mac_addr_vf [2022-11-23 15:07:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_mac_addr_vf [2022-11-23 15:07:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_close [2022-11-23 15:07:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_close [2022-11-23 15:07:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:07:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:07:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2022-11-23 15:07:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2022-11-23 15:07:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_maybe_stop_tx [2022-11-23 15:07:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_maybe_stop_tx [2022-11-23 15:07:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:07:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:07:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:07:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:07:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:07:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:07:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 15:07:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 15:07:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_irq [2022-11-23 15:07:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_irq [2022-11-23 15:07:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:07:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:07:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 15:07:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 15:07:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_suspend [2022-11-23 15:07:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_suspend [2022-11-23 15:07:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:07:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 15:07:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 15:07:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-23 15:07:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-23 15:07:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 15:07:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 15:07:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-23 15:07:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-23 15:07:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:07:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:07:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:07:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_assign_vector [2022-11-23 15:07:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_assign_vector [2022-11-23 15:07:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:07:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:07:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 15:07:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 15:07:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:07:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_desc_unused [2022-11-23 15:07:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_desc_unused [2022-11-23 15:07:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:07:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:07:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:07:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_netpoll [2022-11-23 15:07:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_netpoll [2022-11-23 15:07:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:07:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:07:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-23 15:07:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-23 15:07:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset_interrupt_capability [2022-11-23 15:07:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset_interrupt_capability [2022-11-23 15:07:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:07:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:07:36,151 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_msg_vf [2022-11-23 15:07:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_msg_vf [2022-11-23 15:07:36,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 15:07:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 15:07:36,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-23 15:07:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-23 15:07:36,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_igbvf_exit_module_19_2 [2022-11-23 15:07:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_igbvf_exit_module_19_2 [2022-11-23 15:07:36,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:07:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:07:36,152 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_tx_resources [2022-11-23 15:07:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_tx_resources [2022-11-23 15:07:36,152 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-23 15:07:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-23 15:07:36,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:07:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:07:36,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 15:07:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 15:07:36,153 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 15:07:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 15:07:36,154 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:07:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:07:36,154 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-23 15:07:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-23 15:07:36,154 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-23 15:07:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-23 15:07:36,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:07:36,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 15:07:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 15:07:36,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:07:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:07:36,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-23 15:07:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2022-11-23 15:07:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-23 15:07:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-23 15:07:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-23 15:07:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-23 15:07:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure_msix [2022-11-23 15:07:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure_msix [2022-11-23 15:07:36,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:07:36,157 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_open [2022-11-23 15:07:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_open [2022-11-23 15:07:36,157 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 15:07:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 15:07:36,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:07:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:07:36,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:07:36,158 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:07:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:07:36,158 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-23 15:07:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-23 15:07:36,158 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_nway_reset [2022-11-23 15:07:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_nway_reset [2022-11-23 15:07:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset [2022-11-23 15:07:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset [2022-11-23 15:07:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 15:07:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 15:07:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 15:07:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 15:07:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2022-11-23 15:07:36,160 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2022-11-23 15:07:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 15:07:36,160 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 15:07:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_enable [2022-11-23 15:07:36,160 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_enable [2022-11-23 15:07:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:07:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:07:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 15:07:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 15:07:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reinit_locked [2022-11-23 15:07:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reinit_locked [2022-11-23 15:07:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:07:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:07:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:07:36,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:07:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_update_stats [2022-11-23 15:07:36,162 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_update_stats [2022-11-23 15:07:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_add_vid [2022-11-23 15:07:36,162 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_add_vid [2022-11-23 15:07:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:07:36,163 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:07:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 15:07:36,163 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 15:07:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_bit_vf [2022-11-23 15:07:36,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_bit_vf [2022-11-23 15:07:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2022-11-23 15:07:36,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2022-11-23 15:07:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:07:36,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:07:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-23 15:07:36,164 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-23 15:07:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2022-11-23 15:07:36,164 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2022-11-23 15:07:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 15:07:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 15:07:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:07:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:07:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:07:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:07:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:07:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:07:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2022-11-23 15:07:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2022-11-23 15:07:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 15:07:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 15:07:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:07:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:07:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 15:07:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 15:07:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_down [2022-11-23 15:07:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_down [2022-11-23 15:07:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 15:07:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 15:07:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_regs_len [2022-11-23 15:07:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_regs_len [2022-11-23 15:07:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_irq [2022-11-23 15:07:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_irq [2022-11-23 15:07:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-23 15:07:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-23 15:07:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-23 15:07:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-23 15:07:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2022-11-23 15:07:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2022-11-23 15:07:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 15:07:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 15:07:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:07:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:07:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 15:07:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 15:07:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:07:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:07:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_ring [2022-11-23 15:07:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_ring [2022-11-23 15:07:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_v2p_mailbox [2022-11-23 15:07:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_v2p_mailbox [2022-11-23 15:07:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-23 15:07:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-23 15:07:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-23 15:07:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-23 15:07:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:07:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:07:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:07:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:07:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:07:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_remove [2022-11-23 15:07:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_remove [2022-11-23 15:07:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 15:07:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 15:07:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:07:36,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:07:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_disable [2022-11-23 15:07:36,173 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_disable [2022-11-23 15:07:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:07:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure [2022-11-23 15:07:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure [2022-11-23 15:07:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_rx_resources [2022-11-23 15:07:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_rx_resources [2022-11-23 15:07:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_rx_ring [2022-11-23 15:07:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_rx_ring [2022-11-23 15:07:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-23 15:07:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-23 15:07:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_obtain_mbx_lock_vf [2022-11-23 15:07:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_obtain_mbx_lock_vf [2022-11-23 15:07:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-23 15:07:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-23 15:07:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:07:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_ack_vf [2022-11-23 15:07:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_ack_vf [2022-11-23 15:07:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:07:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:07:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 15:07:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 15:07:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:07:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:07:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-23 15:07:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-23 15:07:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_request_irq [2022-11-23 15:07:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_request_irq [2022-11-23 15:07:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_resume [2022-11-23 15:07:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_resume [2022-11-23 15:07:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:07:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:07:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:07:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:07:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:07:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:07:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_put_txbuf [2022-11-23 15:07:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_put_txbuf [2022-11-23 15:07:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-23 15:07:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-23 15:07:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2022-11-23 15:07:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2022-11-23 15:07:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-23 15:07:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-23 15:07:36,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-23 15:07:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-23 15:07:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:07:36,180 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:07:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 15:07:36,180 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 15:07:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_shutdown [2022-11-23 15:07:36,180 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_shutdown [2022-11-23 15:07:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:07:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:07:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-23 15:07:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-23 15:07:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_tx_resources [2022-11-23 15:07:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_tx_resources [2022-11-23 15:07:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:07:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:07:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_eeprom_len [2022-11-23 15:07:36,182 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_eeprom_len [2022-11-23 15:07:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:07:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-23 15:07:36,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-23 15:07:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:07:36,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:07:36,182 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-23 15:07:36,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-23 15:07:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-23 15:07:36,183 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-23 15:07:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 15:07:36,183 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 15:07:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 15:07:36,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 15:07:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-23 15:07:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-23 15:07:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_resume [2022-11-23 15:07:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_resume [2022-11-23 15:07:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_rx_resources [2022-11-23 15:07:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_rx_resources [2022-11-23 15:07:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2022-11-23 15:07:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2022-11-23 15:07:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_multi [2022-11-23 15:07:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_multi [2022-11-23 15:07:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:07:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:07:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_tx_timeout [2022-11-23 15:07:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_tx_timeout [2022-11-23 15:07:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 15:07:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 15:07:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:07:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:07:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2022-11-23 15:07:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2022-11-23 15:07:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-23 15:07:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-23 15:07:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-23 15:07:36,187 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-23 15:07:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_up [2022-11-23 15:07:36,187 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_up [2022-11-23 15:07:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:07:36,187 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:07:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:07:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-23 15:07:36,188 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-23 15:07:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:07:36,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:07:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-23 15:07:37,570 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:07:37,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:07:37,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:07:46,449 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:07:46,713 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:07:48,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:07:48,912 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:07:48,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:48 BoogieIcfgContainer [2022-11-23 15:07:48,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:07:48,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:07:48,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:07:48,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:07:48,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:07:29" (1/3) ... [2022-11-23 15:07:48,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc7654c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:48, skipping insertion in model container [2022-11-23 15:07:48,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:35" (2/3) ... [2022-11-23 15:07:48,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc7654c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:48, skipping insertion in model container [2022-11-23 15:07:48,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:48" (3/3) ... [2022-11-23 15:07:48,928 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-23 15:07:48,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:07:48,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:07:49,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:07:49,074 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;@49b79091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:07:49,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:07:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 2300 states, 1350 states have (on average 1.2762962962962963) internal successors, (1723), 1392 states have internal predecessors, (1723), 784 states have call successors, (784), 165 states have call predecessors, (784), 164 states have return successors, (776), 762 states have call predecessors, (776), 776 states have call successors, (776) [2022-11-23 15:07:49,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-23 15:07:49,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:49,126 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:49,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:49,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash -123986788, now seen corresponding path program 1 times [2022-11-23 15:07:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:49,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549222766] [2022-11-23 15:07:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:49,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2022-11-23 15:07:50,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:50,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549222766] [2022-11-23 15:07:50,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549222766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:50,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:50,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288320605] [2022-11-23 15:07:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:50,346 INFO L87 Difference]: Start difference. First operand has 2300 states, 1350 states have (on average 1.2762962962962963) internal successors, (1723), 1392 states have internal predecessors, (1723), 784 states have call successors, (784), 165 states have call predecessors, (784), 164 states have return successors, (776), 762 states have call predecessors, (776), 776 states have call successors, (776) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-23 15:07:52,144 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 [] [2022-11-23 15:07:57,047 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 [] [2022-11-23 15:07:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:57,719 INFO L93 Difference]: Finished difference Result 6133 states and 8793 transitions. [2022-11-23 15:07:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:57,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 282 [2022-11-23 15:07:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:57,783 INFO L225 Difference]: With dead ends: 6133 [2022-11-23 15:07:57,784 INFO L226 Difference]: Without dead ends: 3815 [2022-11-23 15:07:57,806 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 [2022-11-23 15:07:57,812 INFO L413 NwaCegarLoop]: 3426 mSDtfsCounter, 2228 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:57,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2228 Valid, 6213 Invalid, 965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 15:07:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2022-11-23 15:07:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3810. [2022-11-23 15:07:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3810 states, 2287 states have (on average 1.2719720157411456) internal successors, (2909), 2343 states have internal predecessors, (2909), 1236 states have call successors, (1236), 285 states have call predecessors, (1236), 285 states have return successors, (1236), 1217 states have call predecessors, (1236), 1236 states have call successors, (1236) [2022-11-23 15:07:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 5381 transitions. [2022-11-23 15:07:58,316 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 5381 transitions. Word has length 282 [2022-11-23 15:07:58,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:58,320 INFO L495 AbstractCegarLoop]: Abstraction has 3810 states and 5381 transitions. [2022-11-23 15:07:58,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-23 15:07:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 5381 transitions. [2022-11-23 15:07:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-23 15:07:58,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:58,334 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:07:58,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash -61436520, now seen corresponding path program 1 times [2022-11-23 15:07:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:58,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126253126] [2022-11-23 15:07:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:58,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2022-11-23 15:07:58,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:58,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126253126] [2022-11-23 15:07:58,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126253126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:58,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:58,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338502736] [2022-11-23 15:07:58,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:58,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:58,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:58,880 INFO L87 Difference]: Start difference. First operand 3810 states and 5381 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-23 15:08:02,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:03,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:06,629 INFO L93 Difference]: Finished difference Result 9530 states and 13364 transitions. [2022-11-23 15:08:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 294 [2022-11-23 15:08:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:06,781 INFO L225 Difference]: With dead ends: 9530 [2022-11-23 15:08:06,781 INFO L226 Difference]: Without dead ends: 5769 [2022-11-23 15:08:06,800 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 [2022-11-23 15:08:06,801 INFO L413 NwaCegarLoop]: 3499 mSDtfsCounter, 2254 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 6183 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 6183 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 973 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 15:08:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2022-11-23 15:08:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5762. [2022-11-23 15:08:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5762 states, 3443 states have (on average 1.2587859424920127) internal successors, (4334), 3520 states have internal predecessors, (4334), 1853 states have call successors, (1853), 464 states have call predecessors, (1853), 464 states have return successors, (1854), 1826 states have call predecessors, (1854), 1853 states have call successors, (1854) [2022-11-23 15:08:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5762 states to 5762 states and 8041 transitions. [2022-11-23 15:08:07,190 INFO L78 Accepts]: Start accepts. Automaton has 5762 states and 8041 transitions. Word has length 294 [2022-11-23 15:08:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:07,192 INFO L495 AbstractCegarLoop]: Abstraction has 5762 states and 8041 transitions. [2022-11-23 15:08:07,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-23 15:08:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5762 states and 8041 transitions. [2022-11-23 15:08:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-23 15:08:07,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:07,209 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 4, 4, 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] [2022-11-23 15:08:07,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:08:07,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash 486098703, now seen corresponding path program 1 times [2022-11-23 15:08:07,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:07,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699953498] [2022-11-23 15:08:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2433 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2430 trivial. 0 not checked. [2022-11-23 15:08:07,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:07,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699953498] [2022-11-23 15:08:07,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699953498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:07,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:07,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872471874] [2022-11-23 15:08:07,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:07,960 INFO L87 Difference]: Start difference. First operand 5762 states and 8041 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 15:08:13,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:15,731 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 [] [2022-11-23 15:08:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:17,253 INFO L93 Difference]: Finished difference Result 13365 states and 18652 transitions. [2022-11-23 15:08:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:17,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 329 [2022-11-23 15:08:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:17,304 INFO L225 Difference]: With dead ends: 13365 [2022-11-23 15:08:17,304 INFO L226 Difference]: Without dead ends: 7652 [2022-11-23 15:08:17,330 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 [2022-11-23 15:08:17,331 INFO L413 NwaCegarLoop]: 4590 mSDtfsCounter, 2164 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 7311 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:17,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2164 Valid, 7311 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1257 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 15:08:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7652 states. [2022-11-23 15:08:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 7646. [2022-11-23 15:08:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7646 states, 4599 states have (on average 1.2617960426179604) internal successors, (5803), 4694 states have internal predecessors, (5803), 2423 states have call successors, (2423), 622 states have call predecessors, (2423), 622 states have return successors, (2424), 2390 states have call predecessors, (2424), 2423 states have call successors, (2424) [2022-11-23 15:08:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 10650 transitions. [2022-11-23 15:08:17,757 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 10650 transitions. Word has length 329 [2022-11-23 15:08:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:17,762 INFO L495 AbstractCegarLoop]: Abstraction has 7646 states and 10650 transitions. [2022-11-23 15:08:17,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 15:08:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 10650 transitions. [2022-11-23 15:08:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-23 15:08:17,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:17,775 INFO L195 NwaCegarLoop]: trace histogram [30, 24, 24, 24, 24, 24, 24, 8, 8, 3, 3, 3, 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] [2022-11-23 15:08:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:08:17,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash -348566398, now seen corresponding path program 1 times [2022-11-23 15:08:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:17,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728973861] [2022-11-23 15:08:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2639 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2622 trivial. 0 not checked. [2022-11-23 15:08:18,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728973861] [2022-11-23 15:08:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728973861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:18,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289672073] [2022-11-23 15:08:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:18,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:18,807 INFO L87 Difference]: Start difference. First operand 7646 states and 10650 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 15:08:20,458 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 [] [2022-11-23 15:08:23,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:25,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:28,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:28,183 INFO L93 Difference]: Finished difference Result 17181 states and 23924 transitions. [2022-11-23 15:08:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:28,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 393 [2022-11-23 15:08:28,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:28,243 INFO L225 Difference]: With dead ends: 17181 [2022-11-23 15:08:28,243 INFO L226 Difference]: Without dead ends: 9584 [2022-11-23 15:08:28,276 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 [2022-11-23 15:08:28,277 INFO L413 NwaCegarLoop]: 4580 mSDtfsCounter, 2242 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 7256 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:28,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 7256 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-23 15:08:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9584 states. [2022-11-23 15:08:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9584 to 9576. [2022-11-23 15:08:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9576 states, 5782 states have (on average 1.2632307160152196) internal successors, (7304), 5897 states have internal predecessors, (7304), 3002 states have call successors, (3002), 790 states have call predecessors, (3002), 790 states have return successors, (3003), 2961 states have call predecessors, (3003), 3002 states have call successors, (3003) [2022-11-23 15:08:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 13309 transitions. [2022-11-23 15:08:28,888 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 13309 transitions. Word has length 393 [2022-11-23 15:08:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:28,889 INFO L495 AbstractCegarLoop]: Abstraction has 9576 states and 13309 transitions. [2022-11-23 15:08:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 15:08:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 13309 transitions. [2022-11-23 15:08:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-23 15:08:28,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:28,904 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 10, 10, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:08:28,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1759496691, now seen corresponding path program 1 times [2022-11-23 15:08:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:28,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060144366] [2022-11-23 15:08:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2856 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2022-11-23 15:08:29,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060144366] [2022-11-23 15:08:29,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060144366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:29,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:29,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:29,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846053659] [2022-11-23 15:08:29,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:29,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:29,822 INFO L87 Difference]: Start difference. First operand 9576 states and 13309 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 15:08:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:37,041 INFO L93 Difference]: Finished difference Result 21012 states and 29220 transitions. [2022-11-23 15:08:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (50), 2 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 442 [2022-11-23 15:08:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:37,106 INFO L225 Difference]: With dead ends: 21012 [2022-11-23 15:08:37,106 INFO L226 Difference]: Without dead ends: 11485 [2022-11-23 15:08:37,146 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 [2022-11-23 15:08:37,147 INFO L413 NwaCegarLoop]: 4113 mSDtfsCounter, 2189 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 6834 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:37,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 6834 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 15:08:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11485 states. [2022-11-23 15:08:37,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11485 to 11479. [2022-11-23 15:08:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11479 states, 6958 states have (on average 1.2654498419085944) internal successors, (8805), 7091 states have internal predecessors, (8805), 3571 states have call successors, (3571), 948 states have call predecessors, (3571), 948 states have return successors, (3572), 3524 states have call predecessors, (3572), 3571 states have call successors, (3572) [2022-11-23 15:08:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11479 states to 11479 states and 15948 transitions. [2022-11-23 15:08:37,880 INFO L78 Accepts]: Start accepts. Automaton has 11479 states and 15948 transitions. Word has length 442 [2022-11-23 15:08:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:37,882 INFO L495 AbstractCegarLoop]: Abstraction has 11479 states and 15948 transitions. [2022-11-23 15:08:37,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 15:08:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11479 states and 15948 transitions. [2022-11-23 15:08:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-23 15:08:37,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:37,900 INFO L195 NwaCegarLoop]: trace histogram [33, 26, 26, 26, 26, 26, 26, 11, 11, 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, 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, 1] [2022-11-23 15:08:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:08:37,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:37,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1251239882, now seen corresponding path program 1 times [2022-11-23 15:08:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:37,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050275912] [2022-11-23 15:08:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2022-11-23 15:08:40,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:40,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050275912] [2022-11-23 15:08:40,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050275912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:40,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:40,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:08:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362419367] [2022-11-23 15:08:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:08:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:08:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:08:40,199 INFO L87 Difference]: Start difference. First operand 11479 states and 15948 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-23 15:08:42,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:45,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:51,381 INFO L93 Difference]: Finished difference Result 30683 states and 43987 transitions. [2022-11-23 15:08:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:08:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 480 [2022-11-23 15:08:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:51,466 INFO L225 Difference]: With dead ends: 30683 [2022-11-23 15:08:51,466 INFO L226 Difference]: Without dead ends: 19253 [2022-11-23 15:08:51,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:08:51,505 INFO L413 NwaCegarLoop]: 3949 mSDtfsCounter, 1722 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 10666 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:51,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 10666 Invalid, 2087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [488 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-23 15:08:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19253 states. [2022-11-23 15:08:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19253 to 11483. [2022-11-23 15:08:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11483 states, 6962 states have (on average 1.2652973283539213) internal successors, (8809), 7095 states have internal predecessors, (8809), 3571 states have call successors, (3571), 948 states have call predecessors, (3571), 948 states have return successors, (3572), 3524 states have call predecessors, (3572), 3571 states have call successors, (3572) [2022-11-23 15:08:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11483 states to 11483 states and 15952 transitions. [2022-11-23 15:08:52,388 INFO L78 Accepts]: Start accepts. Automaton has 11483 states and 15952 transitions. Word has length 480 [2022-11-23 15:08:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:52,389 INFO L495 AbstractCegarLoop]: Abstraction has 11483 states and 15952 transitions. [2022-11-23 15:08:52,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-23 15:08:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 11483 states and 15952 transitions. [2022-11-23 15:08:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-23 15:08:52,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:52,406 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 11, 11, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:52,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:08:52,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -858965640, now seen corresponding path program 1 times [2022-11-23 15:08:52,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:52,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521277726] [2022-11-23 15:08:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3077 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3030 trivial. 0 not checked. [2022-11-23 15:08:53,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521277726] [2022-11-23 15:08:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521277726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:53,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:08:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684708846] [2022-11-23 15:08:53,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:08:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:08:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:08:53,270 INFO L87 Difference]: Start difference. First operand 11483 states and 15952 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:08:56,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:57,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:58,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:01,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:05,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:09:10,048 INFO L93 Difference]: Finished difference Result 25241 states and 35038 transitions. [2022-11-23 15:09:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:09:10,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 480 [2022-11-23 15:09:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:09:10,114 INFO L225 Difference]: With dead ends: 25241 [2022-11-23 15:09:10,114 INFO L226 Difference]: Without dead ends: 13807 [2022-11-23 15:09:10,154 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 [2022-11-23 15:09:10,154 INFO L413 NwaCegarLoop]: 4563 mSDtfsCounter, 2221 mSDsluCounter, 11847 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 16410 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:09:10,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2221 Valid, 16410 Invalid, 2795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2791 Invalid, 1 Unknown, 0 Unchecked, 16.1s Time] [2022-11-23 15:09:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13807 states. [2022-11-23 15:09:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13807 to 13797. [2022-11-23 15:09:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13797 states, 8370 states have (on average 1.266188769414576) internal successors, (10598), 8528 states have internal predecessors, (10598), 4271 states have call successors, (4271), 1152 states have call predecessors, (4271), 1154 states have return successors, (4274), 4219 states have call predecessors, (4274), 4271 states have call successors, (4274) [2022-11-23 15:09:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13797 states to 13797 states and 19143 transitions. [2022-11-23 15:09:11,222 INFO L78 Accepts]: Start accepts. Automaton has 13797 states and 19143 transitions. Word has length 480 [2022-11-23 15:09:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:09:11,223 INFO L495 AbstractCegarLoop]: Abstraction has 13797 states and 19143 transitions. [2022-11-23 15:09:11,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:09:11,224 INFO L276 IsEmpty]: Start isEmpty. Operand 13797 states and 19143 transitions. [2022-11-23 15:09:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-23 15:09:11,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:09:11,246 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 11, 11, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:09:11,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:09:11,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:09:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:09:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash -636354255, now seen corresponding path program 1 times [2022-11-23 15:09:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:09:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599553641] [2022-11-23 15:09:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:09:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:09:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:09:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3077 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3030 trivial. 0 not checked. [2022-11-23 15:09:11,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:09:11,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599553641] [2022-11-23 15:09:11,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599553641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:09:11,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:09:11,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:09:11,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873773257] [2022-11-23 15:09:11,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:09:11,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:09:11,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:09:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:09:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:09:11,957 INFO L87 Difference]: Start difference. First operand 13797 states and 19143 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:09:19,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:20,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:23,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:09:28,952 INFO L93 Difference]: Finished difference Result 29858 states and 41406 transitions. [2022-11-23 15:09:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:09:28,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 481 [2022-11-23 15:09:28,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:09:29,021 INFO L225 Difference]: With dead ends: 29858 [2022-11-23 15:09:29,021 INFO L226 Difference]: Without dead ends: 16110 [2022-11-23 15:09:29,063 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 [2022-11-23 15:09:29,064 INFO L413 NwaCegarLoop]: 4653 mSDtfsCounter, 2226 mSDsluCounter, 12026 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 16679 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:09:29,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2226 Valid, 16679 Invalid, 2857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2848 Invalid, 1 Unknown, 0 Unchecked, 16.3s Time] [2022-11-23 15:09:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16110 states. [2022-11-23 15:09:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16110 to 16100. [2022-11-23 15:09:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16100 states, 9777 states have (on average 1.2665439296307661) internal successors, (12383), 9958 states have internal predecessors, (12383), 4961 states have call successors, (4961), 1356 states have call predecessors, (4961), 1360 states have return successors, (4966), 4904 states have call predecessors, (4966), 4961 states have call successors, (4966) [2022-11-23 15:09:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16100 states to 16100 states and 22310 transitions. [2022-11-23 15:09:29,888 INFO L78 Accepts]: Start accepts. Automaton has 16100 states and 22310 transitions. Word has length 481 [2022-11-23 15:09:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:09:29,889 INFO L495 AbstractCegarLoop]: Abstraction has 16100 states and 22310 transitions. [2022-11-23 15:09:29,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:09:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 16100 states and 22310 transitions. [2022-11-23 15:09:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-23 15:09:29,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:09:29,902 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 11, 11, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:09:29,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:09:29,902 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:09:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:09:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash 869861978, now seen corresponding path program 1 times [2022-11-23 15:09:29,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:09:29,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059573955] [2022-11-23 15:09:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:09:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:09:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:09:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3077 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3030 trivial. 0 not checked. [2022-11-23 15:09:30,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:09:30,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059573955] [2022-11-23 15:09:30,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059573955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:09:30,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:09:30,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:09:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709421714] [2022-11-23 15:09:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:09:30,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:09:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:09:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:09:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:09:30,681 INFO L87 Difference]: Start difference. First operand 16100 states and 22310 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:09:33,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:34,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:36,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:40,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:09:47,628 INFO L93 Difference]: Finished difference Result 34407 states and 47665 transitions. [2022-11-23 15:09:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:09:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 482 [2022-11-23 15:09:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:09:47,718 INFO L225 Difference]: With dead ends: 34407 [2022-11-23 15:09:47,718 INFO L226 Difference]: Without dead ends: 18356 [2022-11-23 15:09:47,776 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 [2022-11-23 15:09:47,777 INFO L413 NwaCegarLoop]: 4508 mSDtfsCounter, 2183 mSDsluCounter, 11720 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 16228 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:09:47,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 16228 Invalid, 2824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2812 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2022-11-23 15:09:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18356 states. [2022-11-23 15:09:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18356 to 18346. [2022-11-23 15:09:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18346 states, 11150 states have (on average 1.2666367713004485) internal successors, (14123), 11352 states have internal predecessors, (14123), 5634 states have call successors, (5634), 1554 states have call predecessors, (5634), 1560 states have return successors, (5641), 5572 states have call predecessors, (5641), 5634 states have call successors, (5641) [2022-11-23 15:09:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18346 states to 18346 states and 25398 transitions. [2022-11-23 15:09:48,678 INFO L78 Accepts]: Start accepts. Automaton has 18346 states and 25398 transitions. Word has length 482 [2022-11-23 15:09:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:09:48,679 INFO L495 AbstractCegarLoop]: Abstraction has 18346 states and 25398 transitions. [2022-11-23 15:09:48,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:09:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 18346 states and 25398 transitions. [2022-11-23 15:09:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-23 15:09:48,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:09:48,693 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 11, 11, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:09:48,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:09:48,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:09:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:09:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -360799398, now seen corresponding path program 1 times [2022-11-23 15:09:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:09:48,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958018533] [2022-11-23 15:09:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:09:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:09:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:09:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3077 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3030 trivial. 0 not checked. [2022-11-23 15:09:49,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:09:49,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958018533] [2022-11-23 15:09:49,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958018533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:09:49,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:09:49,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:09:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399409076] [2022-11-23 15:09:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:09:49,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:09:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:09:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:09:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:09:49,373 INFO L87 Difference]: Start difference. First operand 18346 states and 25398 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:09:52,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:56,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:09:59,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:01,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:03,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:08,937 INFO L93 Difference]: Finished difference Result 39039 states and 54037 transitions. [2022-11-23 15:10:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:10:08,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 483 [2022-11-23 15:10:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:09,033 INFO L225 Difference]: With dead ends: 39039 [2022-11-23 15:10:09,033 INFO L226 Difference]: Without dead ends: 20742 [2022-11-23 15:10:09,094 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 [2022-11-23 15:10:09,095 INFO L413 NwaCegarLoop]: 4432 mSDtfsCounter, 2191 mSDsluCounter, 11586 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 16018 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:09,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 16018 Invalid, 2765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2022-11-23 15:10:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20742 states. [2022-11-23 15:10:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20742 to 20732. [2022-11-23 15:10:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20732 states, 12602 states have (on average 1.2655927630534836) internal successors, (15949), 12825 states have internal predecessors, (15949), 6355 states have call successors, (6355), 1765 states have call predecessors, (6355), 1773 states have return successors, (6364), 6289 states have call predecessors, (6364), 6355 states have call successors, (6364) [2022-11-23 15:10:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20732 states to 20732 states and 28668 transitions. [2022-11-23 15:10:10,345 INFO L78 Accepts]: Start accepts. Automaton has 20732 states and 28668 transitions. Word has length 483 [2022-11-23 15:10:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:10,346 INFO L495 AbstractCegarLoop]: Abstraction has 20732 states and 28668 transitions. [2022-11-23 15:10:10,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:10:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20732 states and 28668 transitions. [2022-11-23 15:10:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-23 15:10:10,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:10,362 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 11, 11, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:10:10,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1447347443, now seen corresponding path program 1 times [2022-11-23 15:10:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:10,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341419062] [2022-11-23 15:10:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:10,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3077 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3030 trivial. 0 not checked. [2022-11-23 15:10:11,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:11,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341419062] [2022-11-23 15:10:11,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341419062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:11,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:11,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:10:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97783541] [2022-11-23 15:10:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:10:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:10:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:10:11,276 INFO L87 Difference]: Start difference. First operand 20732 states and 28668 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:10:16,110 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 [] [2022-11-23 15:10:18,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:19,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:22,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:27,538 INFO L93 Difference]: Finished difference Result 43531 states and 60201 transitions. [2022-11-23 15:10:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:10:27,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 484 [2022-11-23 15:10:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:27,625 INFO L225 Difference]: With dead ends: 43531 [2022-11-23 15:10:27,626 INFO L226 Difference]: Without dead ends: 22848 [2022-11-23 15:10:27,775 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 [2022-11-23 15:10:27,775 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 2184 mSDsluCounter, 11553 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 15974 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:27,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 15974 Invalid, 2751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2732 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2022-11-23 15:10:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22848 states. [2022-11-23 15:10:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22848 to 22838. [2022-11-23 15:10:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22838 states, 13901 states have (on average 1.2660240270484138) internal successors, (17599), 14142 states have internal predecessors, (17599), 6976 states have call successors, (6976), 1951 states have call predecessors, (6976), 1959 states have return successors, (6985), 6904 states have call predecessors, (6985), 6976 states have call successors, (6985) [2022-11-23 15:10:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22838 states to 22838 states and 31560 transitions. [2022-11-23 15:10:28,720 INFO L78 Accepts]: Start accepts. Automaton has 22838 states and 31560 transitions. Word has length 484 [2022-11-23 15:10:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:28,721 INFO L495 AbstractCegarLoop]: Abstraction has 22838 states and 31560 transitions. [2022-11-23 15:10:28,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:10:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 22838 states and 31560 transitions. [2022-11-23 15:10:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2022-11-23 15:10:28,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:28,736 INFO L195 NwaCegarLoop]: trace histogram [33, 26, 26, 26, 26, 26, 26, 13, 13, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:10:28,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 375468780, now seen corresponding path program 1 times [2022-11-23 15:10:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:28,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883105630] [2022-11-23 15:10:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3303 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2022-11-23 15:10:32,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:32,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883105630] [2022-11-23 15:10:32,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883105630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:32,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:32,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:10:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880283729] [2022-11-23 15:10:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:10:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:10:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:10:32,783 INFO L87 Difference]: Start difference. First operand 22838 states and 31560 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-23 15:10:34,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:37,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:41,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:44,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:10:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:47,792 INFO L93 Difference]: Finished difference Result 45655 states and 63124 transitions. [2022-11-23 15:10:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:10:47,793 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), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) Word has length 497 [2022-11-23 15:10:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:47,884 INFO L225 Difference]: With dead ends: 45655 [2022-11-23 15:10:47,885 INFO L226 Difference]: Without dead ends: 22866 [2022-11-23 15:10:47,961 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 [2022-11-23 15:10:47,961 INFO L413 NwaCegarLoop]: 2771 mSDtfsCounter, 0 mSDsluCounter, 8281 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11052 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:47,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11052 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1770 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-11-23 15:10:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22866 states. [2022-11-23 15:10:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22866 to 22842. [2022-11-23 15:10:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22842 states, 13904 states have (on average 1.2659666283084006) internal successors, (17602), 14145 states have internal predecessors, (17602), 6976 states have call successors, (6976), 1951 states have call predecessors, (6976), 1960 states have return successors, (7013), 6905 states have call predecessors, (7013), 6976 states have call successors, (7013) [2022-11-23 15:10:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22842 states to 22842 states and 31591 transitions. [2022-11-23 15:10:49,021 INFO L78 Accepts]: Start accepts. Automaton has 22842 states and 31591 transitions. Word has length 497 [2022-11-23 15:10:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:49,022 INFO L495 AbstractCegarLoop]: Abstraction has 22842 states and 31591 transitions. [2022-11-23 15:10:49,023 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), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-23 15:10:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 22842 states and 31591 transitions. [2022-11-23 15:10:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-11-23 15:10:49,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:49,037 INFO L195 NwaCegarLoop]: trace histogram [33, 26, 26, 26, 26, 26, 25, 15, 15, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:49,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:10:49,038 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:49,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash -837119396, now seen corresponding path program 1 times [2022-11-23 15:10:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:49,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890958396] [2022-11-23 15:10:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3392 trivial. 0 not checked. [2022-11-23 15:10:56,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:56,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890958396] [2022-11-23 15:10:56,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890958396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:56,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:56,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:10:56,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651209131] [2022-11-23 15:10:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:10:56,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:10:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:10:56,448 INFO L87 Difference]: Start difference. First operand 22842 states and 31591 transitions. Second operand has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-23 15:11:05,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:06,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:08,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:11:16,343 INFO L93 Difference]: Finished difference Result 22866 states and 31651 transitions. [2022-11-23 15:11:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:11:16,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) Word has length 510 [2022-11-23 15:11:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:11:16,415 INFO L225 Difference]: With dead ends: 22866 [2022-11-23 15:11:16,415 INFO L226 Difference]: Without dead ends: 22864 [2022-11-23 15:11:16,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:11:16,423 INFO L413 NwaCegarLoop]: 2774 mSDtfsCounter, 3052 mSDsluCounter, 6808 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3054 SdHoareTripleChecker+Valid, 9582 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:11:16,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3054 Valid, 9582 Invalid, 3252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3250 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time] [2022-11-23 15:11:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22864 states. [2022-11-23 15:11:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22864 to 22840. [2022-11-23 15:11:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22840 states, 13903 states have (on average 1.2651226354024312) internal successors, (17589), 14143 states have internal predecessors, (17589), 6976 states have call successors, (6976), 1951 states have call predecessors, (6976), 1960 states have return successors, (7013), 6905 states have call predecessors, (7013), 6976 states have call successors, (7013) [2022-11-23 15:11:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22840 states to 22840 states and 31578 transitions. [2022-11-23 15:11:19,068 INFO L78 Accepts]: Start accepts. Automaton has 22840 states and 31578 transitions. Word has length 510 [2022-11-23 15:11:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:11:19,069 INFO L495 AbstractCegarLoop]: Abstraction has 22840 states and 31578 transitions. [2022-11-23 15:11:19,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-23 15:11:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 22840 states and 31578 transitions. [2022-11-23 15:11:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-23 15:11:19,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:19,088 INFO L195 NwaCegarLoop]: trace histogram [35, 24, 24, 24, 24, 24, 24, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:11:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:11:19,088 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:11:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash -137392242, now seen corresponding path program 1 times [2022-11-23 15:11:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:19,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046324377] [2022-11-23 15:11:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3254 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 3180 trivial. 0 not checked. [2022-11-23 15:11:19,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046324377] [2022-11-23 15:11:19,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046324377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:11:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146528141] [2022-11-23 15:11:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:11:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:11:19,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:11:19,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:11:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:21,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 5240 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:11:21,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:11:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3254 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 3122 trivial. 0 not checked. [2022-11-23 15:11:22,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:11:22,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146528141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:22,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:11:22,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:11:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556680350] [2022-11-23 15:11:22,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:22,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:11:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:11:22,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:11:22,006 INFO L87 Difference]: Start difference. First operand 22840 states and 31578 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-23 15:11:26,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:11:31,085 INFO L93 Difference]: Finished difference Result 49701 states and 68523 transitions. [2022-11-23 15:11:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:11:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 521 [2022-11-23 15:11:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:11:31,168 INFO L225 Difference]: With dead ends: 49701 [2022-11-23 15:11:31,168 INFO L226 Difference]: Without dead ends: 26910 [2022-11-23 15:11:31,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:11:31,224 INFO L413 NwaCegarLoop]: 3599 mSDtfsCounter, 2984 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:11:31,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2984 Valid, 5863 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:11:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26910 states. [2022-11-23 15:11:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26910 to 26904. [2022-11-23 15:11:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26904 states, 16352 states have (on average 1.2625978473581214) internal successors, (20646), 16624 states have internal predecessors, (20646), 8168 states have call successors, (8168), 2374 states have call predecessors, (8168), 2383 states have return successors, (8181), 8086 states have call predecessors, (8181), 8168 states have call successors, (8181) [2022-11-23 15:11:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26904 states to 26904 states and 36995 transitions. [2022-11-23 15:11:34,548 INFO L78 Accepts]: Start accepts. Automaton has 26904 states and 36995 transitions. Word has length 521 [2022-11-23 15:11:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:11:34,549 INFO L495 AbstractCegarLoop]: Abstraction has 26904 states and 36995 transitions. [2022-11-23 15:11:34,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-23 15:11:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 26904 states and 36995 transitions. [2022-11-23 15:11:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-23 15:11:34,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:34,562 INFO L195 NwaCegarLoop]: trace histogram [35, 24, 24, 24, 24, 24, 24, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-11-23 15:11:34,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:11:34,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd394a3-b581-4277-9372-943609f480fa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:11:34,776 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:11:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1165400351, now seen corresponding path program 1 times [2022-11-23 15:11:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:34,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770967530] [2022-11-23 15:11:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3232 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 3173 trivial. 0 not checked. [2022-11-23 15:11:35,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:35,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770967530] [2022-11-23 15:11:35,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770967530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:35,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:11:35,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:11:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571196484] [2022-11-23 15:11:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:35,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:11:35,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:11:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:35,215 INFO L87 Difference]: Start difference. First operand 26904 states and 36995 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2022-11-23 15:11:38,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:41,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:11:48,017 INFO L93 Difference]: Finished difference Result 56073 states and 77113 transitions. [2022-11-23 15:11:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:11:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 530 [2022-11-23 15:11:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:11:48,120 INFO L225 Difference]: With dead ends: 56073 [2022-11-23 15:11:48,120 INFO L226 Difference]: Without dead ends: 29218 [2022-11-23 15:11:48,174 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 [2022-11-23 15:11:48,175 INFO L413 NwaCegarLoop]: 4659 mSDtfsCounter, 2277 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 7381 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:11:48,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 7381 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1256 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-11-23 15:11:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29218 states. [2022-11-23 15:11:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29218 to 29214. [2022-11-23 15:11:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29214 states, 17754 states have (on average 1.2630956404190605) internal successors, (22425), 18050 states have internal predecessors, (22425), 8873 states have call successors, (8873), 2577 states have call predecessors, (8873), 2586 states have return successors, (8886), 8784 states have call predecessors, (8886), 8873 states have call successors, (8886) [2022-11-23 15:11:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29214 states to 29214 states and 40184 transitions. [2022-11-23 15:11:51,474 INFO L78 Accepts]: Start accepts. Automaton has 29214 states and 40184 transitions. Word has length 530 [2022-11-23 15:11:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:11:51,475 INFO L495 AbstractCegarLoop]: Abstraction has 29214 states and 40184 transitions. [2022-11-23 15:11:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2022-11-23 15:11:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 29214 states and 40184 transitions. [2022-11-23 15:11:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-11-23 15:11:51,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:51,492 INFO L195 NwaCegarLoop]: trace histogram [35, 24, 24, 24, 24, 24, 24, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:11:51,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:11:51,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:11:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash -873484891, now seen corresponding path program 1 times [2022-11-23 15:11:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066529889] [2022-11-23 15:11:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2022-11-23 15:11:51,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066529889] [2022-11-23 15:11:51,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066529889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:51,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:11:51,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:11:51,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044912178] [2022-11-23 15:11:51,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:51,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:11:51,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:11:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:51,938 INFO L87 Difference]: Start difference. First operand 29214 states and 40184 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-23 15:11:54,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:56,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:59,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:05,498 INFO L93 Difference]: Finished difference Result 60244 states and 82896 transitions. [2022-11-23 15:12:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 545 [2022-11-23 15:12:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:05,591 INFO L225 Difference]: With dead ends: 60244 [2022-11-23 15:12:05,591 INFO L226 Difference]: Without dead ends: 31079 [2022-11-23 15:12:05,645 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 [2022-11-23 15:12:05,646 INFO L413 NwaCegarLoop]: 4594 mSDtfsCounter, 2157 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 7319 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:05,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 7319 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1251 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-11-23 15:12:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31079 states. [2022-11-23 15:12:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31079 to 31075. [2022-11-23 15:12:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31075 states, 18892 states have (on average 1.2637624391276732) internal successors, (23875), 19206 states have internal predecessors, (23875), 9440 states have call successors, (9440), 2733 states have call predecessors, (9440), 2742 states have return successors, (9453), 9345 states have call predecessors, (9453), 9440 states have call successors, (9453) [2022-11-23 15:12:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31075 states to 31075 states and 42768 transitions. [2022-11-23 15:12:08,866 INFO L78 Accepts]: Start accepts. Automaton has 31075 states and 42768 transitions. Word has length 545 [2022-11-23 15:12:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:08,867 INFO L495 AbstractCegarLoop]: Abstraction has 31075 states and 42768 transitions. [2022-11-23 15:12:08,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-23 15:12:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 31075 states and 42768 transitions. [2022-11-23 15:12:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2022-11-23 15:12:08,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:08,893 INFO L195 NwaCegarLoop]: trace histogram [37, 24, 24, 24, 24, 24, 24, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2022-11-23 15:12:08,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 15:12:08,893 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:12:08,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash -958919310, now seen corresponding path program 1 times [2022-11-23 15:12:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:08,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786122951] [2022-11-23 15:12:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3491 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 3412 trivial. 0 not checked. [2022-11-23 15:12:09,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786122951] [2022-11-23 15:12:09,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786122951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:09,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:09,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:12:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741043823] [2022-11-23 15:12:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:12:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:12:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:12:09,673 INFO L87 Difference]: Start difference. First operand 31075 states and 42768 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 4 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-23 15:12:12,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:26,030 INFO L93 Difference]: Finished difference Result 64479 states and 88712 transitions. [2022-11-23 15:12:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:12:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 4 states have call predecessors, (55), 3 states have call successors, (55) Word has length 551 [2022-11-23 15:12:26,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:26,156 INFO L225 Difference]: With dead ends: 64479 [2022-11-23 15:12:26,156 INFO L226 Difference]: Without dead ends: 33453 [2022-11-23 15:12:26,217 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 [2022-11-23 15:12:26,217 INFO L413 NwaCegarLoop]: 4606 mSDtfsCounter, 2215 mSDsluCounter, 11931 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 16537 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:26,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 16537 Invalid, 2801 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2797 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-11-23 15:12:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33453 states.