./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS --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 bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- 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-8393723 [2022-11-19 07:30:21,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:30:21,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:30:21,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:30:21,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:30:21,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:30:21,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:30:21,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:30:21,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:30:21,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:30:21,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:30:21,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:30:21,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:30:21,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:30:21,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:30:21,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:30:21,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:30:21,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:30:21,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:30:21,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:30:21,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:30:21,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:30:21,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:30:21,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:30:21,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:30:21,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:30:21,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:30:21,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:30:21,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:30:21,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:30:21,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:30:21,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:30:21,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:30:21,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:30:21,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:30:21,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:30:21,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:30:21,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:30:21,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:30:21,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:30:21,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:30:21,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:30:21,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:30:21,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:30:21,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:30:21,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:30:21,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:30:21,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:30:21,961 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:30:21,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:30:21,961 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:30:21,961 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:30:21,962 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:30:21,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:30:21,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:30:21,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:30:21,963 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:30:21,963 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:30:21,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:30:21,964 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:30:21,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:30:21,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:30:21,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:30:21,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:30:21,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:30:21,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:30:21,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:30:21,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:30:21,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:30:21,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:30:21,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:30:21,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:30:21,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:30:21,968 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:30:21,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:30:21,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:30:21,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:30:21,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:30:21,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:30:21,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:30:21,969 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_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2022-11-19 07:30:22,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:30:22,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:30:22,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:30:22,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:30:22,356 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:30:22,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-19 07:30:22,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/data/864cc4543/4ba1dc75cc084b67b3d558ee628edac8/FLAG5e9772254 [2022-11-19 07:30:23,575 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:30:23,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-19 07:30:23,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/data/864cc4543/4ba1dc75cc084b67b3d558ee628edac8/FLAG5e9772254 [2022-11-19 07:30:23,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/data/864cc4543/4ba1dc75cc084b67b3d558ee628edac8 [2022-11-19 07:30:23,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:30:23,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:30:23,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:30:23,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:30:23,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:30:23,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:30:23" (1/1) ... [2022-11-19 07:30:23,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2a07f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:23, skipping insertion in model container [2022-11-19 07:30:23,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:30:23" (1/1) ... [2022-11-19 07:30:23,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:30:24,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:30:26,788 WARN L234 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_07512343-e3e6-4338-ab5a-1b486e65233b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2022-11-19 07:30:27,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:30:27,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:30:27,755 WARN L234 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_07512343-e3e6-4338-ab5a-1b486e65233b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2022-11-19 07:30:27,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:30:28,054 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:30:28,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28 WrapperNode [2022-11-19 07:30:28,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:30:28,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:30:28,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:30:28,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:30:28,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,530 INFO L138 Inliner]: procedures = 481, calls = 4104, calls flagged for inlining = 211, calls inlined = 204, statements flattened = 8060 [2022-11-19 07:30:28,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:30:28,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:30:28,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:30:28,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:30:28,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,864 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:30:28,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:30:28,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:30:28,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:30:28,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (1/1) ... [2022-11-19 07:30:28,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:30:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:28,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:30:28,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07512343-e3e6-4338-ab5a-1b486e65233b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:30:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-19 07:30:29,014 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-19 07:30:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-19 07:30:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-19 07:30:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 07:30:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 07:30:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:30:29,015 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:30:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-19 07:30:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-19 07:30:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-19 07:30:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-19 07:30:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-19 07:30:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-19 07:30:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 07:30:29,017 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 07:30:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-19 07:30:29,017 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-19 07:30:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:30:29,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:30:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-19 07:30:29,018 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-19 07:30:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-11-19 07:30:29,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-11-19 07:30:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-19 07:30:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-19 07:30:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-19 07:30:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-19 07:30:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-19 07:30:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-19 07:30:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-19 07:30:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-19 07:30:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister_drivers [2022-11-19 07:30:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister_drivers [2022-11-19 07:30:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-19 07:30:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-19 07:30:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-19 07:30:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-19 07:30:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_work [2022-11-19 07:30:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_work [2022-11-19 07:30:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:30:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:30:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-19 07:30:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-19 07:30:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-19 07:30:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-19 07:30:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-19 07:30:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-19 07:30:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-19 07:30:29,023 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-19 07:30:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 07:30:29,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 07:30:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:30:29,024 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:30:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-19 07:30:29,024 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-19 07:30:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-19 07:30:29,024 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-19 07:30:29,024 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-19 07:30:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-19 07:30:29,025 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-19 07:30:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:30:29,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:30:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:30:29,025 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:30:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-19 07:30:29,026 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-19 07:30:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:30:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 07:30:29,026 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 07:30:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-19 07:30:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-19 07:30:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-19 07:30:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-19 07:30:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:30:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:30:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-19 07:30:29,028 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-19 07:30:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-19 07:30:29,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-19 07:30:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:30:29,028 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:30:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:30:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-19 07:30:29,029 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-19 07:30:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:30:29,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:30:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:30:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-19 07:30:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-19 07:30:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-19 07:30:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-19 07:30:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-19 07:30:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-19 07:30:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:30:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:30:29,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:30:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-19 07:30:29,031 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-19 07:30:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-19 07:30:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-19 07:30:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-19 07:30:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-19 07:30:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-19 07:30:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-19 07:30:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:30:29,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:30:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:30:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:30:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:30:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:30:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:30:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:30:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:30:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:30:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-19 07:30:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-19 07:30:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 07:30:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 07:30:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-19 07:30:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-19 07:30:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:30:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:30:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-19 07:30:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-19 07:30:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:30:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:30:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:30:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:30:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-19 07:30:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-19 07:30:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:30:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:30:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-19 07:30:29,038 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-19 07:30:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-19 07:30:29,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-19 07:30:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 07:30:29,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 07:30:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-19 07:30:29,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-19 07:30:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-19 07:30:29,039 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-19 07:30:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-19 07:30:29,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-19 07:30:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:30:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:30:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:30:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:30:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-11-19 07:30:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-11-19 07:30:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-19 07:30:29,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-19 07:30:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 07:30:29,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 07:30:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:30:29,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:30:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 07:30:29,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 07:30:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:30:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:30:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-11-19 07:30:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-11-19 07:30:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-19 07:30:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-19 07:30:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_msr_changed [2022-11-19 07:30:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_msr_changed [2022-11-19 07:30:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-19 07:30:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-19 07:30:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:30:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:30:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-19 07:30:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-19 07:30:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-11-19 07:30:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-11-19 07:30:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:30:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:30:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-19 07:30:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-19 07:30:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:30:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:30:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:30:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-19 07:30:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-19 07:30:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-19 07:30:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-19 07:30:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-19 07:30:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-19 07:30:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:30:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 07:30:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 07:30:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-19 07:30:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-19 07:30:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:30:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-19 07:30:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-19 07:30:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 07:30:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 07:30:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-19 07:30:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-19 07:30:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:30:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:30:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-19 07:30:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-19 07:30:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-19 07:30:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-19 07:30:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:30:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:30:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_softint [2022-11-19 07:30:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_softint [2022-11-19 07:30:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-19 07:30:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-19 07:30:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 07:30:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 07:30:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-19 07:30:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-19 07:30:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-19 07:30:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-19 07:30:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-19 07:30:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-19 07:30:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-19 07:30:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-19 07:30:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-19 07:30:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-19 07:30:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-11-19 07:30:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-11-19 07:30:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:30:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:30:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-19 07:30:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-19 07:30:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-19 07:30:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-19 07:30:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:30:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:30:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-19 07:30:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-19 07:30:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:30:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:30:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:30:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-11-19 07:30:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-11-19 07:30:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-19 07:30:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-19 07:30:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-19 07:30:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-19 07:30:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:30:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:30:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-19 07:30:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-19 07:30:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-19 07:30:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-19 07:30:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-19 07:30:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-19 07:30:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-11-19 07:30:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-11-19 07:30:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:30:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:30:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-19 07:30:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-19 07:30:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_handle_sysrq_char [2022-11-19 07:30:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_handle_sysrq_char [2022-11-19 07:30:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-19 07:30:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-19 07:30:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-11-19 07:30:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-11-19 07:30:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 07:30:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 07:30:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-11-19 07:30:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-11-19 07:30:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-19 07:30:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-19 07:30:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-19 07:30:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-19 07:30:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-19 07:30:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-19 07:30:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:30:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:30:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:30:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:30:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-19 07:30:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-19 07:30:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:30:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-19 07:30:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-19 07:30:30,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:30:30,268 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:30:30,709 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:30:45,265 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:30:47,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:30:47,012 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:30:47,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:47 BoogieIcfgContainer [2022-11-19 07:30:47,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:30:47,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:30:47,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:30:47,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:30:47,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:30:23" (1/3) ... [2022-11-19 07:30:47,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116143db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:30:47, skipping insertion in model container [2022-11-19 07:30:47,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:30:28" (2/3) ... [2022-11-19 07:30:47,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116143db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:30:47, skipping insertion in model container [2022-11-19 07:30:47,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:47" (3/3) ... [2022-11-19 07:30:47,028 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-19 07:30:47,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:30:47,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:30:47,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:30:47,205 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;@4d153299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:30:47,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:30:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 1863 states, 1174 states have (on average 1.3568994889267463) internal successors, (1593), 1216 states have internal predecessors, (1593), 555 states have call successors, (555), 133 states have call predecessors, (555), 132 states have return successors, (544), 531 states have call predecessors, (544), 544 states have call successors, (544) [2022-11-19 07:30:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-19 07:30:47,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:47,260 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:47,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash 517941971, now seen corresponding path program 1 times [2022-11-19 07:30:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:47,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033427178] [2022-11-19 07:30:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:30:48,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033427178] [2022-11-19 07:30:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033427178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:48,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:48,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071145101] [2022-11-19 07:30:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:48,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:48,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:48,860 INFO L87 Difference]: Start difference. First operand has 1863 states, 1174 states have (on average 1.3568994889267463) internal successors, (1593), 1216 states have internal predecessors, (1593), 555 states have call successors, (555), 133 states have call predecessors, (555), 132 states have return successors, (544), 531 states have call predecessors, (544), 544 states have call successors, (544) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:30:51,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:53,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:55,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:57,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:00,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:02,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:04,252 INFO L93 Difference]: Finished difference Result 5359 states and 7997 transitions. [2022-11-19 07:31:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 207 [2022-11-19 07:31:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:04,307 INFO L225 Difference]: With dead ends: 5359 [2022-11-19 07:31:04,307 INFO L226 Difference]: Without dead ends: 3516 [2022-11-19 07:31:04,323 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 [2022-11-19 07:31:04,327 INFO L413 NwaCegarLoop]: 3100 mSDtfsCounter, 2432 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:04,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 5473 Invalid, 696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 690 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2022-11-19 07:31:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-11-19 07:31:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 3493. [2022-11-19 07:31:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2217 states have (on average 1.3468651330626973) internal successors, (2986), 2266 states have internal predecessors, (2986), 1015 states have call successors, (1015), 261 states have call predecessors, (1015), 260 states have return successors, (1083), 979 states have call predecessors, (1083), 1006 states have call successors, (1083) [2022-11-19 07:31:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5084 transitions. [2022-11-19 07:31:04,676 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5084 transitions. Word has length 207 [2022-11-19 07:31:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:04,680 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 5084 transitions. [2022-11-19 07:31:04,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5084 transitions. [2022-11-19 07:31:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 07:31:04,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:04,696 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:04,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:31:04,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1690197316, now seen corresponding path program 1 times [2022-11-19 07:31:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:04,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396898828] [2022-11-19 07:31:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:31:05,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396898828] [2022-11-19 07:31:05,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396898828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:05,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:05,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312448342] [2022-11-19 07:31:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:05,534 INFO L87 Difference]: Start difference. First operand 3493 states and 5084 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:07,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:09,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:13,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:16,379 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 [] [2022-11-19 07:31:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:18,858 INFO L93 Difference]: Finished difference Result 9843 states and 14267 transitions. [2022-11-19 07:31:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:18,859 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), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 214 [2022-11-19 07:31:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:18,914 INFO L225 Difference]: With dead ends: 9843 [2022-11-19 07:31:18,914 INFO L226 Difference]: Without dead ends: 6397 [2022-11-19 07:31:18,936 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 [2022-11-19 07:31:18,940 INFO L413 NwaCegarLoop]: 3450 mSDtfsCounter, 2118 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 5699 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:18,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 5699 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 830 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2022-11-19 07:31:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-11-19 07:31:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6369. [2022-11-19 07:31:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6369 states, 4026 states have (on average 1.3415300546448088) internal successors, (5401), 4117 states have internal predecessors, (5401), 1842 states have call successors, (1842), 501 states have call predecessors, (1842), 500 states have return successors, (1977), 1775 states have call predecessors, (1977), 1833 states have call successors, (1977) [2022-11-19 07:31:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6369 states to 6369 states and 9220 transitions. [2022-11-19 07:31:19,283 INFO L78 Accepts]: Start accepts. Automaton has 6369 states and 9220 transitions. Word has length 214 [2022-11-19 07:31:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 6369 states and 9220 transitions. [2022-11-19 07:31:19,285 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), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6369 states and 9220 transitions. [2022-11-19 07:31:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 07:31:19,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:19,291 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:31:19,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1553082988, now seen corresponding path program 1 times [2022-11-19 07:31:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:19,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524615551] [2022-11-19 07:31:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:31:20,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:20,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524615551] [2022-11-19 07:31:20,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524615551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:20,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:20,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:20,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816738448] [2022-11-19 07:31:20,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:20,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:20,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:20,194 INFO L87 Difference]: Start difference. First operand 6369 states and 9220 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:22,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:24,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:27,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:29,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:34,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:36,025 INFO L93 Difference]: Finished difference Result 18583 states and 27050 transitions. [2022-11-19 07:31:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:36,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 214 [2022-11-19 07:31:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:36,142 INFO L225 Difference]: With dead ends: 18583 [2022-11-19 07:31:36,142 INFO L226 Difference]: Without dead ends: 12261 [2022-11-19 07:31:36,191 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 [2022-11-19 07:31:36,193 INFO L413 NwaCegarLoop]: 4088 mSDtfsCounter, 2416 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 6397 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:36,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2416 Valid, 6397 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 856 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-11-19 07:31:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12261 states. [2022-11-19 07:31:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12261 to 12227. [2022-11-19 07:31:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12227 states, 7731 states have (on average 1.3409649463200104) internal successors, (10367), 7901 states have internal predecessors, (10367), 3516 states have call successors, (3516), 979 states have call predecessors, (3516), 979 states have return successors, (3976), 3395 states have call predecessors, (3976), 3507 states have call successors, (3976) [2022-11-19 07:31:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12227 states to 12227 states and 17859 transitions. [2022-11-19 07:31:37,168 INFO L78 Accepts]: Start accepts. Automaton has 12227 states and 17859 transitions. Word has length 214 [2022-11-19 07:31:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 12227 states and 17859 transitions. [2022-11-19 07:31:37,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12227 states and 17859 transitions. [2022-11-19 07:31:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-19 07:31:37,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:37,179 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:37,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:31:37,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:37,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1609039905, now seen corresponding path program 1 times [2022-11-19 07:31:37,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:37,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726454965] [2022-11-19 07:31:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:37,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:31:38,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:38,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726454965] [2022-11-19 07:31:38,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726454965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:38,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:38,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711243118] [2022-11-19 07:31:38,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:38,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:38,036 INFO L87 Difference]: Start difference. First operand 12227 states and 17859 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:40,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:42,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:45,980 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 [] [2022-11-19 07:31:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:51,507 INFO L93 Difference]: Finished difference Result 36235 states and 52927 transitions. [2022-11-19 07:31:51,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:51,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 217 [2022-11-19 07:31:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:51,685 INFO L225 Difference]: With dead ends: 36235 [2022-11-19 07:31:51,685 INFO L226 Difference]: Without dead ends: 24055 [2022-11-19 07:31:51,755 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 [2022-11-19 07:31:51,756 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 2361 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 6529 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:51,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 6529 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 879 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2022-11-19 07:31:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24055 states. [2022-11-19 07:31:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24055 to 24017. [2022-11-19 07:31:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24017 states, 15213 states have (on average 1.3412213238677446) internal successors, (20404), 15528 states have internal predecessors, (20404), 6866 states have call successors, (6866), 1936 states have call predecessors, (6866), 1937 states have return successors, (7807), 6645 states have call predecessors, (7807), 6857 states have call successors, (7807) [2022-11-19 07:31:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24017 states to 24017 states and 35077 transitions. [2022-11-19 07:31:53,410 INFO L78 Accepts]: Start accepts. Automaton has 24017 states and 35077 transitions. Word has length 217 [2022-11-19 07:31:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:53,413 INFO L495 AbstractCegarLoop]: Abstraction has 24017 states and 35077 transitions. [2022-11-19 07:31:53,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:31:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 24017 states and 35077 transitions. [2022-11-19 07:31:53,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-19 07:31:53,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:53,419 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:53,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:31:53,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash 574596183, now seen corresponding path program 1 times [2022-11-19 07:31:53,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:53,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598714937] [2022-11-19 07:31:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:31:54,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598714937] [2022-11-19 07:31:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598714937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:54,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:54,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582765131] [2022-11-19 07:31:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:54,244 INFO L87 Difference]: Start difference. First operand 24017 states and 35077 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:31:56,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:58,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:02,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:07,063 INFO L93 Difference]: Finished difference Result 70199 states and 104946 transitions. [2022-11-19 07:32:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:07,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 228 [2022-11-19 07:32:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:07,348 INFO L225 Difference]: With dead ends: 70199 [2022-11-19 07:32:07,349 INFO L226 Difference]: Without dead ends: 46229 [2022-11-19 07:32:07,484 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 [2022-11-19 07:32:07,485 INFO L413 NwaCegarLoop]: 3926 mSDtfsCounter, 2433 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:07,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 6129 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 809 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 07:32:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46229 states. [2022-11-19 07:32:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46229 to 46032. [2022-11-19 07:32:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46032 states, 29301 states have (on average 1.3446640046414797) internal successors, (39400), 29999 states have internal predecessors, (39400), 12966 states have call successors, (12966), 3804 states have call predecessors, (12966), 3764 states have return successors, (16152), 12397 states have call predecessors, (16152), 12952 states have call successors, (16152) [2022-11-19 07:32:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46032 states to 46032 states and 68518 transitions. [2022-11-19 07:32:10,541 INFO L78 Accepts]: Start accepts. Automaton has 46032 states and 68518 transitions. Word has length 228 [2022-11-19 07:32:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:10,542 INFO L495 AbstractCegarLoop]: Abstraction has 46032 states and 68518 transitions. [2022-11-19 07:32:10,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:32:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 46032 states and 68518 transitions. [2022-11-19 07:32:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-19 07:32:10,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:10,547 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:32:10,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 631197935, now seen corresponding path program 1 times [2022-11-19 07:32:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:10,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247619367] [2022-11-19 07:32:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:32:11,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:11,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247619367] [2022-11-19 07:32:11,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247619367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:11,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:11,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:32:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856995272] [2022-11-19 07:32:11,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:11,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:11,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:11,464 INFO L87 Difference]: Start difference. First operand 46032 states and 68518 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:32:13,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:15,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:19,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:22,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:27,231 INFO L93 Difference]: Finished difference Result 65946 states and 97417 transitions. [2022-11-19 07:32:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:27,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 229 [2022-11-19 07:32:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:27,762 INFO L225 Difference]: With dead ends: 65946 [2022-11-19 07:32:27,762 INFO L226 Difference]: Without dead ends: 65943 [2022-11-19 07:32:27,809 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 [2022-11-19 07:32:27,812 INFO L413 NwaCegarLoop]: 4020 mSDtfsCounter, 2171 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 6285 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 846 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2022-11-19 07:32:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65943 states. [2022-11-19 07:32:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65943 to 65864. [2022-11-19 07:32:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65864 states, 41939 states have (on average 1.3433319821645724) internal successors, (56338), 42977 states have internal predecessors, (56338), 18426 states have call successors, (18426), 5538 states have call predecessors, (18426), 5498 states have return successors, (22572), 17599 states have call predecessors, (22572), 18412 states have call successors, (22572) [2022-11-19 07:32:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65864 states to 65864 states and 97336 transitions. [2022-11-19 07:32:32,605 INFO L78 Accepts]: Start accepts. Automaton has 65864 states and 97336 transitions. Word has length 229 [2022-11-19 07:32:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:32,607 INFO L495 AbstractCegarLoop]: Abstraction has 65864 states and 97336 transitions. [2022-11-19 07:32:32,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:32:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 65864 states and 97336 transitions. [2022-11-19 07:32:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-19 07:32:32,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:32,612 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:32,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:32:32,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1909110182, now seen corresponding path program 1 times [2022-11-19 07:32:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:32,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256974303] [2022-11-19 07:32:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:32,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:32:33,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:33,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256974303] [2022-11-19 07:32:33,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256974303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:33,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:33,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:32:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430016096] [2022-11-19 07:32:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:33,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:33,491 INFO L87 Difference]: Start difference. First operand 65864 states and 97336 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:32:34,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:36,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:40,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:42,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:47,300 INFO L93 Difference]: Finished difference Result 65944 states and 97421 transitions. [2022-11-19 07:32:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:47,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 230 [2022-11-19 07:32:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:47,781 INFO L225 Difference]: With dead ends: 65944 [2022-11-19 07:32:47,781 INFO L226 Difference]: Without dead ends: 65941 [2022-11-19 07:32:47,814 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 [2022-11-19 07:32:47,814 INFO L413 NwaCegarLoop]: 4020 mSDtfsCounter, 2167 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:47,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 6288 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 844 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2022-11-19 07:32:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65941 states. [2022-11-19 07:32:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65941 to 65873. [2022-11-19 07:32:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65873 states, 41944 states have (on average 1.3432910547396528) internal successors, (56343), 42986 states have internal predecessors, (56343), 18426 states have call successors, (18426), 5538 states have call predecessors, (18426), 5502 states have return successors, (22582), 17599 states have call predecessors, (22582), 18412 states have call successors, (22582) [2022-11-19 07:32:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65873 states to 65873 states and 97351 transitions. [2022-11-19 07:32:51,605 INFO L78 Accepts]: Start accepts. Automaton has 65873 states and 97351 transitions. Word has length 230 [2022-11-19 07:32:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:51,606 INFO L495 AbstractCegarLoop]: Abstraction has 65873 states and 97351 transitions. [2022-11-19 07:32:51,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:32:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 65873 states and 97351 transitions. [2022-11-19 07:32:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-19 07:32:51,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:51,620 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:51,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:32:51,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash 945721682, now seen corresponding path program 1 times [2022-11-19 07:32:51,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:51,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637927940] [2022-11-19 07:32:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:51,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:32:52,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637927940] [2022-11-19 07:32:52,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637927940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:52,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:52,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:32:52,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826956149] [2022-11-19 07:32:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:52,242 INFO L87 Difference]: Start difference. First operand 65873 states and 97351 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:32:54,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:56,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:00,003 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 [] [2022-11-19 07:33:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:06,328 INFO L93 Difference]: Finished difference Result 79185 states and 115782 transitions. [2022-11-19 07:33:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:33:06,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 231 [2022-11-19 07:33:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:06,799 INFO L225 Difference]: With dead ends: 79185 [2022-11-19 07:33:06,799 INFO L226 Difference]: Without dead ends: 79182 [2022-11-19 07:33:06,825 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 [2022-11-19 07:33:06,826 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 2361 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:06,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 6463 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 870 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-11-19 07:33:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79182 states. [2022-11-19 07:33:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79182 to 79130. [2022-11-19 07:33:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79130 states, 49921 states have (on average 1.3339476372668817) internal successors, (66592), 51203 states have internal predecessors, (66592), 22298 states have call successors, (22298), 6962 states have call predecessors, (22298), 6910 states have return successors, (26814), 21279 states have call predecessors, (26814), 22284 states have call successors, (26814) [2022-11-19 07:33:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79130 states to 79130 states and 115704 transitions. [2022-11-19 07:33:10,666 INFO L78 Accepts]: Start accepts. Automaton has 79130 states and 115704 transitions. Word has length 231 [2022-11-19 07:33:10,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:10,666 INFO L495 AbstractCegarLoop]: Abstraction has 79130 states and 115704 transitions. [2022-11-19 07:33:10,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:33:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 79130 states and 115704 transitions. [2022-11-19 07:33:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-19 07:33:10,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:10,672 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:33:10,673 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash -748798883, now seen corresponding path program 1 times [2022-11-19 07:33:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585576679] [2022-11-19 07:33:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:10,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:33:11,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585576679] [2022-11-19 07:33:11,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585576679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:11,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:11,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:33:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631118646] [2022-11-19 07:33:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:33:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:33:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:33:11,283 INFO L87 Difference]: Start difference. First operand 79130 states and 115704 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:33:13,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:15,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:19,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:21,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:26,026 INFO L93 Difference]: Finished difference Result 112248 states and 165787 transitions. [2022-11-19 07:33:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:33:26,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 232 [2022-11-19 07:33:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:26,771 INFO L225 Difference]: With dead ends: 112248 [2022-11-19 07:33:26,771 INFO L226 Difference]: Without dead ends: 112218 [2022-11-19 07:33:26,867 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 [2022-11-19 07:33:26,870 INFO L413 NwaCegarLoop]: 3765 mSDtfsCounter, 2432 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:26,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 5649 Invalid, 755 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 750 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-11-19 07:33:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112218 states. [2022-11-19 07:33:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112218 to 112202. [2022-11-19 07:33:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112202 states, 71151 states have (on average 1.3382102851681634) internal successors, (95215), 73117 states have internal predecessors, (95215), 31126 states have call successors, (31126), 10158 states have call predecessors, (31126), 9924 states have return successors, (39324), 29365 states have call predecessors, (39324), 31108 states have call successors, (39324) [2022-11-19 07:33:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112202 states to 112202 states and 165665 transitions. [2022-11-19 07:33:33,197 INFO L78 Accepts]: Start accepts. Automaton has 112202 states and 165665 transitions. Word has length 232 [2022-11-19 07:33:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:33,198 INFO L495 AbstractCegarLoop]: Abstraction has 112202 states and 165665 transitions. [2022-11-19 07:33:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:33:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 112202 states and 165665 transitions. [2022-11-19 07:33:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-19 07:33:33,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:33,229 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:33,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:33:33,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1622496194, now seen corresponding path program 1 times [2022-11-19 07:33:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:33,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009992751] [2022-11-19 07:33:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 07:33:33,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:33,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009992751] [2022-11-19 07:33:33,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009992751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:33,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:33,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:33:33,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836585257] [2022-11-19 07:33:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:33,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:33:33,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:33:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:33:33,978 INFO L87 Difference]: Start difference. First operand 112202 states and 165665 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:33:36,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:38,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:40,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:46,676 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 []