./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-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_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/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_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/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_921bc37b-8292-46aa-9e22-254e78949a1d/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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- 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 08:10:38,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:10:38,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:10:38,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:10:38,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:10:38,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:10:38,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:10:38,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:10:38,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:10:38,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:10:38,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:10:38,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:10:38,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:10:38,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:10:38,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:10:38,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:10:38,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:10:38,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:10:38,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:10:38,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:10:38,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:10:38,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:10:38,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:10:38,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:10:38,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:10:38,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:10:38,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:10:38,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:10:38,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:10:38,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:10:38,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:10:38,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:10:38,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:10:38,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:10:38,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:10:38,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:10:38,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:10:38,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:10:38,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:10:38,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:10:38,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:10:38,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:10:38,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:10:38,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:10:38,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:10:38,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:10:38,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:10:38,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:10:38,316 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:10:38,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:10:38,317 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:10:38,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:10:38,318 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:10:38,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:10:38,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:10:38,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:10:38,319 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:10:38,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:10:38,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:10:38,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:10:38,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:10:38,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:10:38,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:10:38,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:10:38,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:10:38,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:10:38,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:10:38,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:10:38,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:10:38,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:10:38,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:10:38,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:10:38,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:10:38,326 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:10:38,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:10:38,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:10:38,326 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:10:38,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:10:38,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:10:38,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:10:38,327 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_921bc37b-8292-46aa-9e22-254e78949a1d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2022-11-19 08:10:38,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:10:38,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:10:38,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:10:38,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:10:38,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:10:38,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-19 08:10:38,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/data/2b72c4e88/3c30dbfb458a4c47abb2c587165e9045/FLAGad81fcc2d [2022-11-19 08:10:39,718 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:10:39,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-19 08:10:39,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/data/2b72c4e88/3c30dbfb458a4c47abb2c587165e9045/FLAGad81fcc2d [2022-11-19 08:10:40,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/data/2b72c4e88/3c30dbfb458a4c47abb2c587165e9045 [2022-11-19 08:10:40,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:10:40,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:10:40,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:10:40,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:10:40,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:10:40,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:10:40" (1/1) ... [2022-11-19 08:10:40,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40771142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:40, skipping insertion in model container [2022-11-19 08:10:40,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:10:40" (1/1) ... [2022-11-19 08:10:40,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:10:40,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:10:41,523 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_921bc37b-8292-46aa-9e22-254e78949a1d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-19 08:10:42,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:10:42,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:10:42,853 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_921bc37b-8292-46aa-9e22-254e78949a1d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-19 08:10:43,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:10:43,450 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:10:43,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43 WrapperNode [2022-11-19 08:10:43,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:10:43,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:10:43,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:10:43,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:10:43,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:43,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:43,814 INFO L138 Inliner]: procedures = 371, calls = 3025, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6258 [2022-11-19 08:10:43,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:10:43,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:10:43,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:10:43,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:10:43,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:43,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:43,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:43,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:44,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:44,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:44,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:44,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:44,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:10:44,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:10:44,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:10:44,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:10:44,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (1/1) ... [2022-11-19 08:10:44,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:10:44,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:44,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:10:44,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_921bc37b-8292-46aa-9e22-254e78949a1d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:10:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-19 08:10:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-19 08:10:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-19 08:10:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-19 08:10:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-19 08:10:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-19 08:10:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-19 08:10:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-19 08:10:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-19 08:10:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-19 08:10:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2022-11-19 08:10:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2022-11-19 08:10:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-19 08:10:44,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-19 08:10:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:10:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:10:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-19 08:10:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-19 08:10:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-19 08:10:44,266 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-19 08:10:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-19 08:10:44,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-19 08:10:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-11-19 08:10:44,266 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-11-19 08:10:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-19 08:10:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-19 08:10:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-19 08:10:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-19 08:10:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 08:10:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 08:10:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 08:10:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 08:10:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-19 08:10:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-19 08:10:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:10:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:10:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 08:10:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 08:10:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-19 08:10:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-19 08:10:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-19 08:10:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-19 08:10:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-11-19 08:10:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-11-19 08:10:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-19 08:10:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-19 08:10:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-19 08:10:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-19 08:10:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:10:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:10:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:10:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:10:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-11-19 08:10:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-11-19 08:10:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-19 08:10:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-19 08:10:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-19 08:10:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-19 08:10:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-19 08:10:44,275 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-19 08:10:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-19 08:10:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-19 08:10:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:10:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:10:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:10:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:10:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-19 08:10:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-19 08:10:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-19 08:10:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-19 08:10:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-19 08:10:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-19 08:10:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-19 08:10:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-19 08:10:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-11-19 08:10:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-11-19 08:10:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2022-11-19 08:10:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2022-11-19 08:10:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-19 08:10:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-19 08:10:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 08:10:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 08:10:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:10:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:10:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:10:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:10:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:10:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-19 08:10:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-19 08:10:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-19 08:10:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-19 08:10:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-19 08:10:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-19 08:10:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-19 08:10:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-19 08:10:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-19 08:10:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-19 08:10:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:10:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 08:10:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 08:10:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-19 08:10:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-19 08:10:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-19 08:10:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-19 08:10:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-19 08:10:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-19 08:10:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-19 08:10:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:10:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:10:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-19 08:10:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-19 08:10:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-19 08:10:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-19 08:10:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:10:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:10:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-19 08:10:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-19 08:10:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 08:10:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 08:10:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-19 08:10:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-19 08:10:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:10:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:10:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-19 08:10:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-19 08:10:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-19 08:10:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-19 08:10:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:10:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:10:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 08:10:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 08:10:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 08:10:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 08:10:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-19 08:10:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-19 08:10:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-19 08:10:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-19 08:10:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-19 08:10:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-19 08:10:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:10:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:10:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-19 08:10:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-19 08:10:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2022-11-19 08:10:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2022-11-19 08:10:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:10:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:10:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-19 08:10:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-19 08:10:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:10:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:10:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-19 08:10:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-19 08:10:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-19 08:10:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-19 08:10:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-19 08:10:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-19 08:10:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-19 08:10:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-19 08:10:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-19 08:10:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-19 08:10:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:10:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-19 08:10:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-19 08:10:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-19 08:10:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-19 08:10:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-11-19 08:10:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-11-19 08:10:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 08:10:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 08:10:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-19 08:10:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-19 08:10:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-19 08:10:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-19 08:10:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:10:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:10:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 08:10:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 08:10:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-19 08:10:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-19 08:10:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-19 08:10:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-19 08:10:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:10:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:10:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2022-11-19 08:10:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2022-11-19 08:10:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2022-11-19 08:10:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2022-11-19 08:10:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-19 08:10:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-19 08:10:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:10:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-11-19 08:10:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-11-19 08:10:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-19 08:10:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-19 08:10:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-19 08:10:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-19 08:10:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:10:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:10:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-19 08:10:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-19 08:10:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-19 08:10:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-19 08:10:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-11-19 08:10:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-11-19 08:10:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:10:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-19 08:10:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-19 08:10:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:10:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:10:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:10:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:10:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:10:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2022-11-19 08:10:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2022-11-19 08:10:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2022-11-19 08:10:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2022-11-19 08:10:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:10:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:10:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:10:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:10:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-19 08:10:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-19 08:10:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 08:10:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 08:10:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-19 08:10:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-19 08:10:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2022-11-19 08:10:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2022-11-19 08:10:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-19 08:10:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-19 08:10:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-19 08:10:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-19 08:10:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-19 08:10:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-19 08:10:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-19 08:10:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-19 08:10:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:10:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:10:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-19 08:10:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-19 08:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:10:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-19 08:10:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-19 08:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:10:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:10:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-19 08:10:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-19 08:10:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:10:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:10:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:10:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-19 08:10:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-19 08:10:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-19 08:10:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-19 08:10:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:10:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:10:45,394 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:10:45,399 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:10:45,829 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:10:46,856 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2022-11-19 08:10:55,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:10:56,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:10:56,668 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:10:56,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:10:56 BoogieIcfgContainer [2022-11-19 08:10:56,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:10:56,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:10:56,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:10:56,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:10:56,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:10:40" (1/3) ... [2022-11-19 08:10:56,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26438b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:10:56, skipping insertion in model container [2022-11-19 08:10:56,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:43" (2/3) ... [2022-11-19 08:10:56,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26438b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:10:56, skipping insertion in model container [2022-11-19 08:10:56,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:10:56" (3/3) ... [2022-11-19 08:10:56,681 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-19 08:10:56,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:10:56,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:10:56,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:10:56,789 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;@e9f62c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:10:56,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:10:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 1613 states, 1026 states have (on average 1.361598440545809) internal successors, (1397), 1067 states have internal predecessors, (1397), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2022-11-19 08:10:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 08:10:56,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:56,819 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:56,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:10:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1481344370, now seen corresponding path program 1 times [2022-11-19 08:10:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:56,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806632373] [2022-11-19 08:10:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:56,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:10:57,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:57,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806632373] [2022-11-19 08:10:57,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806632373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:57,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:10:57,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:10:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577372081] [2022-11-19 08:10:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:10:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:10:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:10:57,849 INFO L87 Difference]: Start difference. First operand has 1613 states, 1026 states have (on average 1.361598440545809) internal successors, (1397), 1067 states have internal predecessors, (1397), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 08:11:01,410 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 08:11:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:03,271 INFO L93 Difference]: Finished difference Result 4729 states and 6997 transitions. [2022-11-19 08:11:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:03,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2022-11-19 08:11:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:03,313 INFO L225 Difference]: With dead ends: 4729 [2022-11-19 08:11:03,314 INFO L226 Difference]: Without dead ends: 3101 [2022-11-19 08:11:03,327 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 08:11:03,330 INFO L413 NwaCegarLoop]: 2716 mSDtfsCounter, 2173 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 4728 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:03,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 4728 Invalid, 641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 637 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-19 08:11:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-11-19 08:11:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3098. [2022-11-19 08:11:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 1997 states have (on average 1.3485227841762644) internal successors, (2693), 2039 states have internal predecessors, (2693), 867 states have call successors, (867), 234 states have call predecessors, (867), 233 states have return successors, (860), 838 states have call predecessors, (860), 860 states have call successors, (860) [2022-11-19 08:11:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4420 transitions. [2022-11-19 08:11:03,625 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4420 transitions. Word has length 65 [2022-11-19 08:11:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 3098 states and 4420 transitions. [2022-11-19 08:11:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 08:11:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4420 transitions. [2022-11-19 08:11:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 08:11:03,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:03,642 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:11:03,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 770738651, now seen corresponding path program 1 times [2022-11-19 08:11:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:03,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484810948] [2022-11-19 08:11:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:03,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:11:04,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:04,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484810948] [2022-11-19 08:11:04,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484810948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:04,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:04,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033048780] [2022-11-19 08:11:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:04,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:04,121 INFO L87 Difference]: Start difference. First operand 3098 states and 4420 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 08:11:06,543 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 08:11:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:08,786 INFO L93 Difference]: Finished difference Result 9168 states and 13211 transitions. [2022-11-19 08:11:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-11-19 08:11:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:08,843 INFO L225 Difference]: With dead ends: 9168 [2022-11-19 08:11:08,843 INFO L226 Difference]: Without dead ends: 6088 [2022-11-19 08:11:08,864 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 08:11:08,866 INFO L413 NwaCegarLoop]: 2800 mSDtfsCounter, 2218 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 4778 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:08,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 4778 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 662 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 08:11:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2022-11-19 08:11:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 6062. [2022-11-19 08:11:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6062 states, 3906 states have (on average 1.3461341525857655) internal successors, (5258), 3985 states have internal predecessors, (5258), 1691 states have call successors, (1691), 465 states have call predecessors, (1691), 464 states have return successors, (1838), 1639 states have call predecessors, (1838), 1684 states have call successors, (1838) [2022-11-19 08:11:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8787 transitions. [2022-11-19 08:11:09,317 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8787 transitions. Word has length 83 [2022-11-19 08:11:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:09,318 INFO L495 AbstractCegarLoop]: Abstraction has 6062 states and 8787 transitions. [2022-11-19 08:11:09,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 08:11:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8787 transitions. [2022-11-19 08:11:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 08:11:09,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:09,325 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:09,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:11:09,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1769379733, now seen corresponding path program 1 times [2022-11-19 08:11:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247657507] [2022-11-19 08:11:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:09,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:11:09,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:09,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247657507] [2022-11-19 08:11:09,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247657507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:09,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:09,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:09,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015050194] [2022-11-19 08:11:09,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:09,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:09,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:09,793 INFO L87 Difference]: Start difference. First operand 6062 states and 8787 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 08:11:12,659 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 08:11:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:14,959 INFO L93 Difference]: Finished difference Result 17388 states and 25098 transitions. [2022-11-19 08:11:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-11-19 08:11:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:15,043 INFO L225 Difference]: With dead ends: 17388 [2022-11-19 08:11:15,044 INFO L226 Difference]: Without dead ends: 11344 [2022-11-19 08:11:15,080 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 08:11:15,085 INFO L413 NwaCegarLoop]: 2680 mSDtfsCounter, 1979 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 4558 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 695 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-19 08:11:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11344 states. [2022-11-19 08:11:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11344 to 11294. [2022-11-19 08:11:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11294 states, 7254 states have (on average 1.3377446925834022) internal successors, (9704), 7403 states have internal predecessors, (9704), 3153 states have call successors, (3153), 887 states have call predecessors, (3153), 886 states have return successors, (3422), 3057 states have call predecessors, (3422), 3146 states have call successors, (3422) [2022-11-19 08:11:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11294 states to 11294 states and 16279 transitions. [2022-11-19 08:11:15,771 INFO L78 Accepts]: Start accepts. Automaton has 11294 states and 16279 transitions. Word has length 81 [2022-11-19 08:11:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:15,772 INFO L495 AbstractCegarLoop]: Abstraction has 11294 states and 16279 transitions. [2022-11-19 08:11:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 08:11:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 11294 states and 16279 transitions. [2022-11-19 08:11:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 08:11:15,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:15,776 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:15,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:11:15,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1872767484, now seen corresponding path program 1 times [2022-11-19 08:11:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652731966] [2022-11-19 08:11:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:11:16,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:16,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652731966] [2022-11-19 08:11:16,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652731966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:16,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:16,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:16,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363375591] [2022-11-19 08:11:16,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:16,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:16,723 INFO L87 Difference]: Start difference. First operand 11294 states and 16279 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:19,594 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 08:11:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:22,077 INFO L93 Difference]: Finished difference Result 22168 states and 32109 transitions. [2022-11-19 08:11:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:22,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2022-11-19 08:11:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:22,239 INFO L225 Difference]: With dead ends: 22168 [2022-11-19 08:11:22,239 INFO L226 Difference]: Without dead ends: 22165 [2022-11-19 08:11:22,253 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 08:11:22,257 INFO L413 NwaCegarLoop]: 3125 mSDtfsCounter, 2130 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 5106 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:22,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 5106 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-19 08:11:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22165 states. [2022-11-19 08:11:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22165 to 22129. [2022-11-19 08:11:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22129 states, 14227 states have (on average 1.3391438813523582) internal successors, (19052), 14550 states have internal predecessors, (19052), 6167 states have call successors, (6167), 1743 states have call predecessors, (6167), 1734 states have return successors, (6848), 5943 states have call predecessors, (6848), 6160 states have call successors, (6848) [2022-11-19 08:11:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 32067 transitions. [2022-11-19 08:11:23,790 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 32067 transitions. Word has length 84 [2022-11-19 08:11:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:23,791 INFO L495 AbstractCegarLoop]: Abstraction has 22129 states and 32067 transitions. [2022-11-19 08:11:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 32067 transitions. [2022-11-19 08:11:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 08:11:23,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:23,795 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:11:23,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2075172082, now seen corresponding path program 1 times [2022-11-19 08:11:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523558494] [2022-11-19 08:11:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:11:24,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:24,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523558494] [2022-11-19 08:11:24,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523558494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:24,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:24,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705739232] [2022-11-19 08:11:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:24,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:24,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:24,513 INFO L87 Difference]: Start difference. First operand 22129 states and 32067 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:26,960 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 08:11:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:30,568 INFO L93 Difference]: Finished difference Result 66274 states and 96859 transitions. [2022-11-19 08:11:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2022-11-19 08:11:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:30,915 INFO L225 Difference]: With dead ends: 66274 [2022-11-19 08:11:30,916 INFO L226 Difference]: Without dead ends: 44163 [2022-11-19 08:11:31,238 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 08:11:31,242 INFO L413 NwaCegarLoop]: 3158 mSDtfsCounter, 2193 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 5136 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:31,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2193 Valid, 5136 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 682 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 08:11:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44163 states. [2022-11-19 08:11:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44163 to 44120. [2022-11-19 08:11:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44120 states, 28366 states have (on average 1.3392794190227737) internal successors, (37990), 29021 states have internal predecessors, (37990), 12291 states have call successors, (12291), 3479 states have call predecessors, (12291), 3462 states have return successors, (14068), 11835 states have call predecessors, (14068), 12284 states have call successors, (14068) [2022-11-19 08:11:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44120 states to 44120 states and 64349 transitions. [2022-11-19 08:11:34,310 INFO L78 Accepts]: Start accepts. Automaton has 44120 states and 64349 transitions. Word has length 85 [2022-11-19 08:11:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:34,311 INFO L495 AbstractCegarLoop]: Abstraction has 44120 states and 64349 transitions. [2022-11-19 08:11:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 44120 states and 64349 transitions. [2022-11-19 08:11:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 08:11:34,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:34,313 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:34,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:11:34,314 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:34,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -188924975, now seen corresponding path program 1 times [2022-11-19 08:11:34,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:34,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337919010] [2022-11-19 08:11:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:34,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-19 08:11:34,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337919010] [2022-11-19 08:11:34,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337919010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:34,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:34,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328787322] [2022-11-19 08:11:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:34,572 INFO L87 Difference]: Start difference. First operand 44120 states and 64349 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:37,474 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 08:11:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:42,809 INFO L93 Difference]: Finished difference Result 131536 states and 191682 transitions. [2022-11-19 08:11:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:42,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2022-11-19 08:11:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:43,643 INFO L225 Difference]: With dead ends: 131536 [2022-11-19 08:11:43,643 INFO L226 Difference]: Without dead ends: 87434 [2022-11-19 08:11:43,847 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 08:11:43,849 INFO L413 NwaCegarLoop]: 3135 mSDtfsCounter, 2181 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 5093 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:43,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 5093 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 691 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-19 08:11:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87434 states. [2022-11-19 08:11:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87434 to 87312. [2022-11-19 08:11:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87312 states, 56094 states have (on average 1.338289300103398) internal successors, (75070), 57405 states have internal predecessors, (75070), 24315 states have call successors, (24315), 6935 states have call predecessors, (24315), 6902 states have return successors, (27812), 23403 states have call predecessors, (27812), 24308 states have call successors, (27812) [2022-11-19 08:11:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87312 states to 87312 states and 127197 transitions. [2022-11-19 08:11:49,798 INFO L78 Accepts]: Start accepts. Automaton has 87312 states and 127197 transitions. Word has length 87 [2022-11-19 08:11:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:49,800 INFO L495 AbstractCegarLoop]: Abstraction has 87312 states and 127197 transitions. [2022-11-19 08:11:49,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 87312 states and 127197 transitions. [2022-11-19 08:11:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-19 08:11:49,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:49,804 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:11:49,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 92757823, now seen corresponding path program 1 times [2022-11-19 08:11:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:49,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978331182] [2022-11-19 08:11:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:11:50,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978331182] [2022-11-19 08:11:50,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978331182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:50,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:50,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:50,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043191982] [2022-11-19 08:11:50,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:50,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:50,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:50,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:50,563 INFO L87 Difference]: Start difference. First operand 87312 states and 127197 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:11:53,210 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 08:11:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:59,503 INFO L93 Difference]: Finished difference Result 130012 states and 193899 transitions. [2022-11-19 08:11:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:59,503 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), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2022-11-19 08:11:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:00,522 INFO L225 Difference]: With dead ends: 130012 [2022-11-19 08:12:00,523 INFO L226 Difference]: Without dead ends: 130009 [2022-11-19 08:12:00,589 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 08:12:00,589 INFO L413 NwaCegarLoop]: 3177 mSDtfsCounter, 2144 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 5245 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:00,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 5245 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 687 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-19 08:12:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130009 states. [2022-11-19 08:12:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130009 to 129844. [2022-11-19 08:12:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129844 states, 83434 states have (on average 1.3405206510535272) internal successors, (111845), 85669 states have internal predecessors, (111845), 36187 states have call successors, (36187), 10399 states have call predecessors, (36187), 10222 states have return successors, (45668), 34391 states have call predecessors, (45668), 36180 states have call successors, (45668) [2022-11-19 08:12:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129844 states to 129844 states and 193700 transitions. [2022-11-19 08:12:08,731 INFO L78 Accepts]: Start accepts. Automaton has 129844 states and 193700 transitions. Word has length 86 [2022-11-19 08:12:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:08,732 INFO L495 AbstractCegarLoop]: Abstraction has 129844 states and 193700 transitions. [2022-11-19 08:12:08,732 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), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:12:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 129844 states and 193700 transitions. [2022-11-19 08:12:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 08:12:08,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:08,737 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:12:08,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1420886991, now seen corresponding path program 1 times [2022-11-19 08:12:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:08,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208455441] [2022-11-19 08:12:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 08:12:09,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:09,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208455441] [2022-11-19 08:12:09,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208455441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:09,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:09,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182328610] [2022-11-19 08:12:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:09,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:09,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:09,117 INFO L87 Difference]: Start difference. First operand 129844 states and 193700 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:12:12,427 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 []