./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c097d45bf953c22cc618c35d7b4a2d8fd3613a03309b6d0b505b710dc0ccbe6f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:29:20,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:29:20,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:29:20,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:29:20,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:29:20,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:29:20,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:29:20,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:29:20,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:29:20,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:29:20,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:29:20,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:29:20,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:29:20,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:29:20,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:29:20,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:29:20,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:29:20,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:29:20,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:29:20,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:29:20,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:29:20,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:29:20,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:29:20,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:29:20,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:29:20,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:29:20,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:29:20,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:29:20,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:29:20,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:29:20,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:29:20,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:29:20,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:29:20,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:29:20,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:29:20,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:29:20,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:29:20,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:29:20,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:29:20,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:29:20,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:29:20,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:29:20,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:29:20,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:29:20,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:29:20,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:29:20,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:29:20,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:29:20,958 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:29:20,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:29:20,958 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:29:20,959 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:29:20,960 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:29:20,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:29:20,960 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:29:20,961 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:29:20,961 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:29:20,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:29:20,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:29:20,962 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:29:20,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:29:20,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:29:20,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:29:20,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:29:20,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:29:20,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:29:20,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:29:20,964 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:29:20,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:29:20,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:29:20,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:29:20,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:20,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:29:20,966 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:29:20,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:29:20,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:29:20,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:29:20,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:29:20,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:29:20,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:29:20,967 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_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c097d45bf953c22cc618c35d7b4a2d8fd3613a03309b6d0b505b710dc0ccbe6f [2022-11-03 03:29:21,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:29:21,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:29:21,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:29:21,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:29:21,325 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:29:21,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-03 03:29:21,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/data/18fb0b31a/1d1a8ee5edd24eeda2c03b16d92fed18/FLAG9933d0913 [2022-11-03 03:29:22,422 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:29:22,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-03 03:29:22,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/data/18fb0b31a/1d1a8ee5edd24eeda2c03b16d92fed18/FLAG9933d0913 [2022-11-03 03:29:22,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/data/18fb0b31a/1d1a8ee5edd24eeda2c03b16d92fed18 [2022-11-03 03:29:22,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:29:22,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:29:22,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:22,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:29:22,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:29:22,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:22" (1/1) ... [2022-11-03 03:29:22,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25af3fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:22, skipping insertion in model container [2022-11-03 03:29:22,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:22" (1/1) ... [2022-11-03 03:29:22,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:29:23,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:29:26,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348277,348290] [2022-11-03 03:29:26,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348422,348435] [2022-11-03 03:29:26,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:26,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:29:26,744 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348277,348290] [2022-11-03 03:29:26,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348422,348435] [2022-11-03 03:29:26,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:26,958 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:29:26,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26 WrapperNode [2022-11-03 03:29:26,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:26,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:26,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:29:26,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:29:26,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,269 INFO L138 Inliner]: procedures = 444, calls = 2166, calls flagged for inlining = 215, calls inlined = 200, statements flattened = 4987 [2022-11-03 03:29:27,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:27,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:29:27,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:29:27,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:29:27,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:29:27,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:29:27,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:29:27,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:29:27,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (1/1) ... [2022-11-03 03:29:27,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:27,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:27,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:29:27,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:29:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 03:29:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure BB_GET_BIT2 [2022-11-03 03:29:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_GET_BIT2 [2022-11-03 03:29:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-03 03:29:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-03 03:29:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:29:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:29:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:29:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:29:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_open [2022-11-03 03:29:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_open [2022-11-03 03:29:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_poll_stop [2022-11-03 03:29:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_poll_stop [2022-11-03 03:29:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure is_quattro_p [2022-11-03 03:29:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure is_quattro_p [2022-11-03 03:29:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:29:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_close [2022-11-03 03:29:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_close [2022-11-03 03:29:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:29:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:29:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:29:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:29:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_87 [2022-11-03 03:29:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_87 [2022-11-03 03:29:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_set_multicast [2022-11-03 03:29:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_set_multicast [2022-11-03 03:29:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:29:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:29:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure BB_PUT_BIT [2022-11-03 03:29:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_PUT_BIT [2022-11-03 03:29:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-03 03:29:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-03 03:29:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_begin_auto_negotiation [2022-11-03 03:29:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_begin_auto_negotiation [2022-11-03 03:29:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_get_counters [2022-11-03 03:29:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_get_counters [2022-11-03 03:29:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_happy_lock_of_happy_meal [2022-11-03 03:29:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_happy_lock_of_happy_meal [2022-11-03 03:29:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:29:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:29:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:29:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:29:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 03:29:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 03:29:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-03 03:29:27,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-03 03:29:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:29:27,965 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:29:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:29:27,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:29:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:29:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:29:27,967 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:29:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2022-11-03 03:29:27,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2022-11-03 03:29:27,968 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:29:27,968 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:29:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:29:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:29:27,969 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:29:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:29:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:29:27,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:29:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:29:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:29:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:29:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-03 03:29:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-03 03:29:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:29:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:29:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:29:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:29:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:29:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:29:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:29:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:29:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure set_happy_link_modes [2022-11-03 03:29:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure set_happy_link_modes [2022-11-03 03:29:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_reset [2022-11-03 03:29:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_reset [2022-11-03 03:29:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:29:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:29:27,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:29:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:29:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:29:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tx_timeout [2022-11-03 03:29:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tx_timeout [2022-11-03 03:29:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:29:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:29:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:29:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_read [2022-11-03 03:29:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_read [2022-11-03 03:29:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:29:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:29:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:29:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:29:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:29:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:29:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:29:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:29:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:29:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 03:29:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 03:29:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 03:29:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 03:29:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:29:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:29:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 03:29:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 03:29:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:29:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:29:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:29:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:29:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:29:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:29:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:29:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:29:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure is_lucent_phy [2022-11-03 03:29:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lucent_phy [2022-11-03 03:29:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:29:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:29:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure hme_read_desc32 [2022-11-03 03:29:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure hme_read_desc32 [2022-11-03 03:29:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 03:29:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 03:29:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:29:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_clean_rings [2022-11-03 03:29:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_clean_rings [2022-11-03 03:29:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:29:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:29:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:29:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:29:27,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:29:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:29:27,997 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:29:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:29:27,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:29:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_happy_meal_exit_14_2 [2022-11-03 03:29:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_happy_meal_exit_14_2 [2022-11-03 03:29:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:29:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:29:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:29:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:29:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 03:29:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 03:29:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 03:29:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 03:29:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:29:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:29:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:29:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:29:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:29:28,000 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:29:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_86 [2022-11-03 03:29:28,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_86 [2022-11-03 03:29:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:29:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:29:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:29:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_stop [2022-11-03 03:29:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_stop [2022-11-03 03:29:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:29:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:29:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 03:29:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 03:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_pci_remove [2022-11-03 03:29:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_pci_remove [2022-11-03 03:29:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_init [2022-11-03 03:29:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_init [2022-11-03 03:29:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 03:29:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 03:29:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:29:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:29:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_write [2022-11-03 03:29:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_write [2022-11-03 03:29:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:29:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:29:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:29:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 03:29:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 03:29:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:29:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:29:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:29:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:29:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-03 03:29:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-03 03:29:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:29:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:29:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:29:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-03 03:29:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-03 03:29:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:29:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:29:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 03:29:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 03:29:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_transceiver_check [2022-11-03 03:29:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_transceiver_check [2022-11-03 03:29:29,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:29:29,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:29:29,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:29:35,587 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:29:35,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:29:37,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:29:37,660 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:29:37,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:37 BoogieIcfgContainer [2022-11-03 03:29:37,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:29:37,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:29:37,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:29:37,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:29:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:29:22" (1/3) ... [2022-11-03 03:29:37,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2573a431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:37, skipping insertion in model container [2022-11-03 03:29:37,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:26" (2/3) ... [2022-11-03 03:29:37,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2573a431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:37, skipping insertion in model container [2022-11-03 03:29:37,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:37" (3/3) ... [2022-11-03 03:29:37,680 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-03 03:29:37,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:29:37,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:29:37,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:29:37,815 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;@262e161a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:29:37,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:29:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 1538 states, 882 states have (on average 1.3061224489795917) internal successors, (1152), 920 states have internal predecessors, (1152), 565 states have call successors, (565), 91 states have call predecessors, (565), 90 states have return successors, (559), 545 states have call predecessors, (559), 559 states have call successors, (559) [2022-11-03 03:29:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 03:29:37,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:37,861 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:29:37,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:37,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1950823381, now seen corresponding path program 1 times [2022-11-03 03:29:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:37,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490565404] [2022-11-03 03:29:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 03:29:38,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:38,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490565404] [2022-11-03 03:29:38,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490565404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:38,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:38,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:38,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002965018] [2022-11-03 03:29:38,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:38,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:38,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:38,801 INFO L87 Difference]: Start difference. First operand has 1538 states, 882 states have (on average 1.3061224489795917) internal successors, (1152), 920 states have internal predecessors, (1152), 565 states have call successors, (565), 91 states have call predecessors, (565), 90 states have return successors, (559), 545 states have call predecessors, (559), 559 states have call successors, (559) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 03:29:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:41,712 INFO L93 Difference]: Finished difference Result 4437 states and 6613 transitions. [2022-11-03 03:29:41,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 143 [2022-11-03 03:29:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:41,754 INFO L225 Difference]: With dead ends: 4437 [2022-11-03 03:29:41,754 INFO L226 Difference]: Without dead ends: 2849 [2022-11-03 03:29:41,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:41,774 INFO L413 NwaCegarLoop]: 2792 mSDtfsCounter, 2050 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:41,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 4804 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:29:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2022-11-03 03:29:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2845. [2022-11-03 03:29:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 1650 states have (on average 1.2987878787878788) internal successors, (2143), 1725 states have internal predecessors, (2143), 1020 states have call successors, (1020), 175 states have call predecessors, (1020), 174 states have return successors, (1033), 988 states have call predecessors, (1033), 1020 states have call successors, (1033) [2022-11-03 03:29:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4196 transitions. [2022-11-03 03:29:42,143 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4196 transitions. Word has length 143 [2022-11-03 03:29:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:42,145 INFO L495 AbstractCegarLoop]: Abstraction has 2845 states and 4196 transitions. [2022-11-03 03:29:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 03:29:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4196 transitions. [2022-11-03 03:29:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 03:29:42,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:42,165 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:42,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:29:42,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1698199421, now seen corresponding path program 1 times [2022-11-03 03:29:42,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:42,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187024093] [2022-11-03 03:29:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:29:42,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187024093] [2022-11-03 03:29:42,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187024093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:42,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:42,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583521454] [2022-11-03 03:29:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:42,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:42,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:42,762 INFO L87 Difference]: Start difference. First operand 2845 states and 4196 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:29:45,859 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 [] [2022-11-03 03:29:47,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:48,763 INFO L93 Difference]: Finished difference Result 7778 states and 11469 transitions. [2022-11-03 03:29:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:48,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2022-11-03 03:29:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:48,813 INFO L225 Difference]: With dead ends: 7778 [2022-11-03 03:29:48,814 INFO L226 Difference]: Without dead ends: 4950 [2022-11-03 03:29:48,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:48,836 INFO L413 NwaCegarLoop]: 2533 mSDtfsCounter, 1615 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:48,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 4458 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 567 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 03:29:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2022-11-03 03:29:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4946. [2022-11-03 03:29:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 2856 states have (on average 1.2899159663865547) internal successors, (3684), 2987 states have internal predecessors, (3684), 1784 states have call successors, (1784), 306 states have call predecessors, (1784), 305 states have return successors, (1797), 1732 states have call predecessors, (1797), 1784 states have call successors, (1797) [2022-11-03 03:29:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 7265 transitions. [2022-11-03 03:29:49,180 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 7265 transitions. Word has length 137 [2022-11-03 03:29:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:49,181 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 7265 transitions. [2022-11-03 03:29:49,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:29:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 7265 transitions. [2022-11-03 03:29:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 03:29:49,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:49,193 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:29:49,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash -217780427, now seen corresponding path program 1 times [2022-11-03 03:29:49,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:49,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490055084] [2022-11-03 03:29:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 03:29:49,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490055084] [2022-11-03 03:29:49,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490055084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:49,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:49,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978828494] [2022-11-03 03:29:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:49,533 INFO L87 Difference]: Start difference. First operand 4946 states and 7265 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:29:51,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:54,102 INFO L93 Difference]: Finished difference Result 14038 states and 20577 transitions. [2022-11-03 03:29:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:54,103 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 190 [2022-11-03 03:29:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:54,176 INFO L225 Difference]: With dead ends: 14038 [2022-11-03 03:29:54,177 INFO L226 Difference]: Without dead ends: 9109 [2022-11-03 03:29:54,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:54,220 INFO L413 NwaCegarLoop]: 2474 mSDtfsCounter, 1926 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 4380 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:54,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 4380 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:29:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9109 states. [2022-11-03 03:29:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9109 to 9103. [2022-11-03 03:29:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9103 states, 5250 states have (on average 1.2857142857142858) internal successors, (6750), 5500 states have internal predecessors, (6750), 3267 states have call successors, (3267), 589 states have call predecessors, (3267), 585 states have return successors, (3295), 3159 states have call predecessors, (3295), 3267 states have call successors, (3295) [2022-11-03 03:29:54,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9103 states to 9103 states and 13312 transitions. [2022-11-03 03:29:54,862 INFO L78 Accepts]: Start accepts. Automaton has 9103 states and 13312 transitions. Word has length 190 [2022-11-03 03:29:54,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:54,864 INFO L495 AbstractCegarLoop]: Abstraction has 9103 states and 13312 transitions. [2022-11-03 03:29:54,865 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:29:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9103 states and 13312 transitions. [2022-11-03 03:29:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 03:29:54,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:54,875 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:29:54,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash 274110690, now seen corresponding path program 1 times [2022-11-03 03:29:54,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:54,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601404947] [2022-11-03 03:29:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-03 03:29:55,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601404947] [2022-11-03 03:29:55,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601404947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:55,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:55,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113887957] [2022-11-03 03:29:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:55,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:55,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:55,405 INFO L87 Difference]: Start difference. First operand 9103 states and 13312 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:29:58,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:59,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:01,582 INFO L93 Difference]: Finished difference Result 23902 states and 34792 transitions. [2022-11-03 03:30:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 192 [2022-11-03 03:30:01,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:01,735 INFO L225 Difference]: With dead ends: 23902 [2022-11-03 03:30:01,735 INFO L226 Difference]: Without dead ends: 14816 [2022-11-03 03:30:01,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:01,820 INFO L413 NwaCegarLoop]: 2637 mSDtfsCounter, 2017 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 4242 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:01,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 4242 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 03:30:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14816 states. [2022-11-03 03:30:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14816 to 14775. [2022-11-03 03:30:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14775 states, 8591 states have (on average 1.2868117797695262) internal successors, (11055), 8997 states have internal predecessors, (11055), 5159 states have call successors, (5159), 1056 states have call predecessors, (5159), 1024 states have return successors, (5243), 4937 states have call predecessors, (5243), 5159 states have call successors, (5243) [2022-11-03 03:30:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14775 states to 14775 states and 21457 transitions. [2022-11-03 03:30:02,946 INFO L78 Accepts]: Start accepts. Automaton has 14775 states and 21457 transitions. Word has length 192 [2022-11-03 03:30:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:02,946 INFO L495 AbstractCegarLoop]: Abstraction has 14775 states and 21457 transitions. [2022-11-03 03:30:02,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 14775 states and 21457 transitions. [2022-11-03 03:30:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 03:30:02,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:02,956 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:02,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:30:02,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:02,958 INFO L85 PathProgramCache]: Analyzing trace with hash -499985881, now seen corresponding path program 1 times [2022-11-03 03:30:02,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:02,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77035543] [2022-11-03 03:30:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:02,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:30:03,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:03,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77035543] [2022-11-03 03:30:03,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77035543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:03,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:03,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030276137] [2022-11-03 03:30:03,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:03,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:03,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:03,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:03,296 INFO L87 Difference]: Start difference. First operand 14775 states and 21457 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:30:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:06,926 INFO L93 Difference]: Finished difference Result 35198 states and 51104 transitions. [2022-11-03 03:30:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 186 [2022-11-03 03:30:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:07,046 INFO L225 Difference]: With dead ends: 35198 [2022-11-03 03:30:07,046 INFO L226 Difference]: Without dead ends: 20440 [2022-11-03 03:30:07,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:07,119 INFO L413 NwaCegarLoop]: 3414 mSDtfsCounter, 1624 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 5331 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:07,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 5331 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 03:30:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20440 states. [2022-11-03 03:30:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20440 to 20430. [2022-11-03 03:30:08,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20430 states, 11849 states have (on average 1.280023630686134) internal successors, (15167), 12399 states have internal predecessors, (15167), 7146 states have call successors, (7146), 1474 states have call predecessors, (7146), 1434 states have return successors, (7230), 6858 states have call predecessors, (7230), 7146 states have call successors, (7230) [2022-11-03 03:30:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20430 states to 20430 states and 29543 transitions. [2022-11-03 03:30:08,514 INFO L78 Accepts]: Start accepts. Automaton has 20430 states and 29543 transitions. Word has length 186 [2022-11-03 03:30:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:08,516 INFO L495 AbstractCegarLoop]: Abstraction has 20430 states and 29543 transitions. [2022-11-03 03:30:08,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:30:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20430 states and 29543 transitions. [2022-11-03 03:30:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 03:30:08,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:08,525 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:08,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:30:08,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1254083527, now seen corresponding path program 1 times [2022-11-03 03:30:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:08,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433004909] [2022-11-03 03:30:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-03 03:30:08,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:08,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433004909] [2022-11-03 03:30:08,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433004909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:08,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:08,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:08,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575948458] [2022-11-03 03:30:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:08,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:08,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:08,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:08,845 INFO L87 Difference]: Start difference. First operand 20430 states and 29543 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-11-03 03:30:12,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:14,878 INFO L93 Difference]: Finished difference Result 60372 states and 87169 transitions. [2022-11-03 03:30:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 210 [2022-11-03 03:30:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:15,215 INFO L225 Difference]: With dead ends: 60372 [2022-11-03 03:30:15,215 INFO L226 Difference]: Without dead ends: 39959 [2022-11-03 03:30:15,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:15,324 INFO L413 NwaCegarLoop]: 3219 mSDtfsCounter, 2066 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:15,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 5175 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 598 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:30:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39959 states. [2022-11-03 03:30:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39959 to 39909. [2022-11-03 03:30:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39909 states, 23174 states have (on average 1.2779839475274013) internal successors, (29616), 24248 states have internal predecessors, (29616), 13892 states have call successors, (13892), 2922 states have call predecessors, (13892), 2842 states have return successors, (14046), 13316 states have call predecessors, (14046), 13892 states have call successors, (14046) [2022-11-03 03:30:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39909 states to 39909 states and 57554 transitions. [2022-11-03 03:30:18,281 INFO L78 Accepts]: Start accepts. Automaton has 39909 states and 57554 transitions. Word has length 210 [2022-11-03 03:30:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:18,282 INFO L495 AbstractCegarLoop]: Abstraction has 39909 states and 57554 transitions. [2022-11-03 03:30:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-11-03 03:30:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 39909 states and 57554 transitions. [2022-11-03 03:30:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-03 03:30:18,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:18,297 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:30:18,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:30:18,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash 881030, now seen corresponding path program 1 times [2022-11-03 03:30:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:18,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079502451] [2022-11-03 03:30:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-11-03 03:30:18,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:18,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079502451] [2022-11-03 03:30:18,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079502451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:18,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:18,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:18,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60560197] [2022-11-03 03:30:18,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:18,803 INFO L87 Difference]: Start difference. First operand 39909 states and 57554 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 03:30:22,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:24,241 INFO L93 Difference]: Finished difference Result 80151 states and 115347 transitions. [2022-11-03 03:30:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:24,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 225 [2022-11-03 03:30:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:24,543 INFO L225 Difference]: With dead ends: 80151 [2022-11-03 03:30:24,544 INFO L226 Difference]: Without dead ends: 40259 [2022-11-03 03:30:24,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:24,962 INFO L413 NwaCegarLoop]: 1954 mSDtfsCounter, 79 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:24,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 3880 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 03:30:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40259 states. [2022-11-03 03:30:27,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40259 to 40259. [2022-11-03 03:30:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40259 states, 23395 states have (on average 1.275571703355418) internal successors, (29842), 24469 states have internal predecessors, (29842), 13909 states have call successors, (13909), 3034 states have call predecessors, (13909), 2954 states have return successors, (14063), 13333 states have call predecessors, (14063), 13909 states have call successors, (14063) [2022-11-03 03:30:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40259 states to 40259 states and 57814 transitions. [2022-11-03 03:30:27,638 INFO L78 Accepts]: Start accepts. Automaton has 40259 states and 57814 transitions. Word has length 225 [2022-11-03 03:30:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:27,639 INFO L495 AbstractCegarLoop]: Abstraction has 40259 states and 57814 transitions. [2022-11-03 03:30:27,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 03:30:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 40259 states and 57814 transitions. [2022-11-03 03:30:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 03:30:27,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:27,664 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 9, 8, 8, 8, 8, 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, 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] [2022-11-03 03:30:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:30:27,664 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash -68086146, now seen corresponding path program 1 times [2022-11-03 03:30:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91142101] [2022-11-03 03:30:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-03 03:30:28,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91142101] [2022-11-03 03:30:28,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91142101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:28,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:28,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056522665] [2022-11-03 03:30:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:28,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:28,155 INFO L87 Difference]: Start difference. First operand 40259 states and 57814 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:30:31,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:33,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:37,006 INFO L93 Difference]: Finished difference Result 94599 states and 137745 transitions. [2022-11-03 03:30:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:37,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 248 [2022-11-03 03:30:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:37,247 INFO L225 Difference]: With dead ends: 94599 [2022-11-03 03:30:37,247 INFO L226 Difference]: Without dead ends: 54403 [2022-11-03 03:30:37,660 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 [2022-11-03 03:30:37,661 INFO L413 NwaCegarLoop]: 2513 mSDtfsCounter, 542 mSDsluCounter, 7950 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 9598 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:37,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 9598 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 03:30:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54403 states. [2022-11-03 03:30:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54403 to 40323. [2022-11-03 03:30:40,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40323 states, 23443 states have (on average 1.2750074649149) internal successors, (29890), 24517 states have internal predecessors, (29890), 13909 states have call successors, (13909), 3034 states have call predecessors, (13909), 2970 states have return successors, (14095), 13349 states have call predecessors, (14095), 13909 states have call successors, (14095) [2022-11-03 03:30:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40323 states to 40323 states and 57894 transitions. [2022-11-03 03:30:40,325 INFO L78 Accepts]: Start accepts. Automaton has 40323 states and 57894 transitions. Word has length 248 [2022-11-03 03:30:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:40,330 INFO L495 AbstractCegarLoop]: Abstraction has 40323 states and 57894 transitions. [2022-11-03 03:30:40,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:30:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 40323 states and 57894 transitions. [2022-11-03 03:30:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 03:30:40,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:40,351 INFO L195 NwaCegarLoop]: trace histogram [14, 9, 9, 8, 8, 8, 8, 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, 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] [2022-11-03 03:30:40,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:30:40,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1499341886, now seen corresponding path program 1 times [2022-11-03 03:30:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:40,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32778245] [2022-11-03 03:30:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-03 03:30:44,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:44,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32778245] [2022-11-03 03:30:44,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32778245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:44,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:44,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:30:44,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078298885] [2022-11-03 03:30:44,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:44,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:30:44,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:44,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:30:44,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:44,989 INFO L87 Difference]: Start difference. First operand 40323 states and 57894 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:30:49,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:52,408 INFO L93 Difference]: Finished difference Result 45389 states and 64822 transitions. [2022-11-03 03:30:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:30:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 248 [2022-11-03 03:30:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:52,577 INFO L225 Difference]: With dead ends: 45389 [2022-11-03 03:30:52,577 INFO L226 Difference]: Without dead ends: 45387 [2022-11-03 03:30:52,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:30:52,600 INFO L413 NwaCegarLoop]: 2074 mSDtfsCounter, 501 mSDsluCounter, 8891 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 9983 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:52,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 9983 Invalid, 1524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1519 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 03:30:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45387 states. [2022-11-03 03:30:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45387 to 45271. [2022-11-03 03:30:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45271 states, 26753 states have (on average 1.2749598175905505) internal successors, (34109), 27957 states have internal predecessors, (34109), 15133 states have call successors, (15133), 3516 states have call predecessors, (15133), 3384 states have return successors, (15419), 14383 states have call predecessors, (15419), 15133 states have call successors, (15419) [2022-11-03 03:30:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45271 states to 45271 states and 64661 transitions. [2022-11-03 03:30:55,148 INFO L78 Accepts]: Start accepts. Automaton has 45271 states and 64661 transitions. Word has length 248 [2022-11-03 03:30:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:55,149 INFO L495 AbstractCegarLoop]: Abstraction has 45271 states and 64661 transitions. [2022-11-03 03:30:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:30:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 45271 states and 64661 transitions. [2022-11-03 03:30:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-03 03:30:55,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:55,173 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:55,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:30:55,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:55,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:55,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1474856683, now seen corresponding path program 1 times [2022-11-03 03:30:55,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:55,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585149306] [2022-11-03 03:30:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-11-03 03:30:55,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585149306] [2022-11-03 03:30:55,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585149306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:55,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:55,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408622371] [2022-11-03 03:30:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:55,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:55,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:55,426 INFO L87 Difference]: Start difference. First operand 45271 states and 64661 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 03:30:58,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:59,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:02,319 INFO L93 Difference]: Finished difference Result 90461 states and 129226 transitions. [2022-11-03 03:31:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 258 [2022-11-03 03:31:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:02,494 INFO L225 Difference]: With dead ends: 90461 [2022-11-03 03:31:02,494 INFO L226 Difference]: Without dead ends: 45271 [2022-11-03 03:31:02,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:02,632 INFO L413 NwaCegarLoop]: 1957 mSDtfsCounter, 7 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:02,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3904 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:31:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45271 states. [2022-11-03 03:31:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45271 to 45271. [2022-11-03 03:31:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45271 states, 26753 states have (on average 1.2722685306320787) internal successors, (34037), 27957 states have internal predecessors, (34037), 15133 states have call successors, (15133), 3516 states have call predecessors, (15133), 3384 states have return successors, (15419), 14383 states have call predecessors, (15419), 15133 states have call successors, (15419) [2022-11-03 03:31:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45271 states to 45271 states and 64589 transitions. [2022-11-03 03:31:05,285 INFO L78 Accepts]: Start accepts. Automaton has 45271 states and 64589 transitions. Word has length 258 [2022-11-03 03:31:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:05,286 INFO L495 AbstractCegarLoop]: Abstraction has 45271 states and 64589 transitions. [2022-11-03 03:31:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 03:31:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 45271 states and 64589 transitions. [2022-11-03 03:31:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-03 03:31:05,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:05,313 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 8, 8, 8, 8, 8, 8, 3, 3, 3, 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] [2022-11-03 03:31:05,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:31:05,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1182004304, now seen corresponding path program 1 times [2022-11-03 03:31:05,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348707008] [2022-11-03 03:31:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:05,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2022-11-03 03:31:05,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:05,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348707008] [2022-11-03 03:31:05,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348707008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:05,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:05,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115105922] [2022-11-03 03:31:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:05,689 INFO L87 Difference]: Start difference. First operand 45271 states and 64589 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 03:31:08,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:10,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:12,877 INFO L93 Difference]: Finished difference Result 86459 states and 124362 transitions. [2022-11-03 03:31:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:12,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 283 [2022-11-03 03:31:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:13,122 INFO L225 Difference]: With dead ends: 86459 [2022-11-03 03:31:13,122 INFO L226 Difference]: Without dead ends: 46199 [2022-11-03 03:31:13,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:13,563 INFO L413 NwaCegarLoop]: 1963 mSDtfsCounter, 19 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3913 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:13,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3913 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:31:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46199 states. [2022-11-03 03:31:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46199 to 45335. [2022-11-03 03:31:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45335 states, 26817 states have (on average 1.2716187493008166) internal successors, (34101), 28021 states have internal predecessors, (34101), 15133 states have call successors, (15133), 3516 states have call predecessors, (15133), 3384 states have return successors, (15419), 14383 states have call predecessors, (15419), 15133 states have call successors, (15419) [2022-11-03 03:31:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45335 states to 45335 states and 64653 transitions. [2022-11-03 03:31:16,107 INFO L78 Accepts]: Start accepts. Automaton has 45335 states and 64653 transitions. Word has length 283 [2022-11-03 03:31:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:16,108 INFO L495 AbstractCegarLoop]: Abstraction has 45335 states and 64653 transitions. [2022-11-03 03:31:16,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 03:31:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 45335 states and 64653 transitions. [2022-11-03 03:31:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-03 03:31:16,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:16,135 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:16,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:31:16,136 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 109163691, now seen corresponding path program 1 times [2022-11-03 03:31:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174139699] [2022-11-03 03:31:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-11-03 03:31:16,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:16,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174139699] [2022-11-03 03:31:16,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174139699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:16,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895098697] [2022-11-03 03:31:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:16,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:16,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:16,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:16,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca777c50-e179-4f12-80e2-d30a293a36c3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:31:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:18,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 3313 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:31:18,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-11-03 03:31:18,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:31:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-11-03 03:31:18,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895098697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:31:18,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [768186420] [2022-11-03 03:31:18,563 INFO L159 IcfgInterpreter]: Started Sifa with 170 locations of interest [2022-11-03 03:31:18,563 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:31:18,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:31:18,573 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:31:18,573 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs