./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:55:27,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:55:27,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:55:27,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:55:27,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:55:27,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:55:27,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:55:27,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:55:27,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:55:27,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:55:27,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:55:27,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:55:27,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:55:27,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:55:27,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:55:27,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:55:27,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:55:27,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:55:27,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:55:27,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:55:27,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:55:27,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:55:27,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:55:27,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:55:27,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:55:27,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:55:27,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:55:27,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:55:27,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:55:27,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:55:27,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:55:27,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:55:27,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:55:27,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:55:27,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:55:27,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:55:27,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:55:27,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:55:27,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:55:27,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:55:27,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:55:27,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:55:27,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:55:27,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:55:27,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:55:27,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:55:27,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:55:27,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:55:27,352 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:55:27,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:55:27,352 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:55:27,352 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:55:27,352 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:55:27,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:55:27,353 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:55:27,353 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:55:27,353 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:55:27,354 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:55:27,354 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:55:27,354 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:55:27,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:55:27,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:55:27,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:55:27,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:55:27,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:55:27,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:55:27,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:55:27,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:55:27,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:55:27,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:55:27,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:55:27,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:55:27,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:55:27,358 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:55:27,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:55:27,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:55:27,358 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:55:27,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:55:27,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:55:27,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:55:27,359 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_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2022-11-03 03:55:27,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:55:27,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:55:27,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:55:27,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:55:27,676 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:55:27,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-03 03:55:27,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/data/cdc56e069/2ecc0f9ec12d458bb2bd9634ea600edc/FLAGa05df387a [2022-11-03 03:55:28,725 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:55:28,726 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-03 03:55:28,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/data/cdc56e069/2ecc0f9ec12d458bb2bd9634ea600edc/FLAGa05df387a [2022-11-03 03:55:29,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/data/cdc56e069/2ecc0f9ec12d458bb2bd9634ea600edc [2022-11-03 03:55:29,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:55:29,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:55:29,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:55:29,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:55:29,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:55:29,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:29" (1/1) ... [2022-11-03 03:55:29,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b970a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:29, skipping insertion in model container [2022-11-03 03:55:29,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:29" (1/1) ... [2022-11-03 03:55:29,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:55:29,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:55:32,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2022-11-03 03:55:33,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:55:33,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:55:33,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2022-11-03 03:55:33,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:55:34,221 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:55:34,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34 WrapperNode [2022-11-03 03:55:34,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:55:34,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:55:34,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:55:34,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:55:34,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,684 INFO L138 Inliner]: procedures = 481, calls = 4096, calls flagged for inlining = 211, calls inlined = 204, statements flattened = 8088 [2022-11-03 03:55:34,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:55:34,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:55:34,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:55:34,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:55:34,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:34,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:35,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:35,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:35,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:55:35,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:55:35,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:55:35,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:55:35,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (1/1) ... [2022-11-03 03:55:35,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:55:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:35,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:55:35,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f75f731c-9421-4dab-b625-39b88e87b352/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:55:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-03 03:55:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-03 03:55:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-03 03:55:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-03 03:55:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 03:55:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 03:55:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:55:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:55:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 03:55:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 03:55:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-03 03:55:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-03 03:55:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-03 03:55:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-03 03:55:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:55:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:55:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-03 03:55:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-03 03:55:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:55:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:55:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-03 03:55:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-03 03:55:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-11-03 03:55:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-11-03 03:55:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-03 03:55:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-03 03:55:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-03 03:55:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-03 03:55:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 03:55:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 03:55:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-03 03:55:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-03 03:55:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister_drivers [2022-11-03 03:55:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister_drivers [2022-11-03 03:55:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-03 03:55:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-03 03:55:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 03:55:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 03:55:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_work [2022-11-03 03:55:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_work [2022-11-03 03:55:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:55:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:55:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-03 03:55:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-03 03:55:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-03 03:55:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-03 03:55:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-03 03:55:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-03 03:55:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-03 03:55:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-03 03:55:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:55:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:55:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:55:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:55:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-03 03:55:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-03 03:55:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-03 03:55:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-03 03:55:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 03:55:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-03 03:55:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-03 03:55:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:55:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:55:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:55:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:55:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-03 03:55:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-03 03:55:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:55:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 03:55:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 03:55:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-03 03:55:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-03 03:55:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-03 03:55:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-03 03:55:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:55:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:55:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-03 03:55:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-03 03:55:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-03 03:55:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-03 03:55:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:55:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:55:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:55:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-03 03:55:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-03 03:55:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:55:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:55:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:55:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-03 03:55:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-03 03:55:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-03 03:55:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-03 03:55:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-03 03:55:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-03 03:55:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:55:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:55:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:55:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-03 03:55:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-03 03:55:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 03:55:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 03:55:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:55:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:55:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 03:55:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 03:55:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:55:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:55:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:55:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:55:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:55:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:55:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:55:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:55:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:55:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:55:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-03 03:55:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-03 03:55:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 03:55:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 03:55:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-03 03:55:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-03 03:55:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:55:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:55:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-03 03:55:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-03 03:55:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:55:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:55:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:55:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:55:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-03 03:55:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-03 03:55:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:55:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:55:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-03 03:55:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-03 03:55:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-03 03:55:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-03 03:55:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 03:55:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 03:55:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:55:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:55:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:55:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:55:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-03 03:55:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-03 03:55:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:55:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:55:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:55:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:55:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-11-03 03:55:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-11-03 03:55:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-03 03:55:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-03 03:55:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-03 03:55:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-03 03:55:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:55:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:55:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 03:55:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 03:55:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:55:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:55:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-11-03 03:55:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-11-03 03:55:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-03 03:55:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-03 03:55:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_msr_changed [2022-11-03 03:55:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_msr_changed [2022-11-03 03:55:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-03 03:55:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-03 03:55:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:55:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:55:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-03 03:55:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-03 03:55:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-11-03 03:55:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-11-03 03:55:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:55:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:55:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-03 03:55:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-03 03:55:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:55:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:55:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:55:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-03 03:55:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-03 03:55:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-03 03:55:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-03 03:55:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 03:55:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 03:55:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:55:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:55:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:55:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-03 03:55:35,413 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-03 03:55:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:55:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-03 03:55:35,413 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-03 03:55:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:55:35,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:55:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-03 03:55:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-03 03:55:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:55:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:55:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-03 03:55:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-03 03:55:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:55:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:55:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:55:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:55:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_softint [2022-11-03 03:55:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_softint [2022-11-03 03:55:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-03 03:55:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-03 03:55:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 03:55:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 03:55:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 03:55:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 03:55:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-03 03:55:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-03 03:55:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-03 03:55:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-03 03:55:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-03 03:55:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-03 03:55:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 03:55:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 03:55:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-11-03 03:55:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-11-03 03:55:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:55:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:55:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-03 03:55:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-03 03:55:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-03 03:55:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-03 03:55:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:55:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:55:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 03:55:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 03:55:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:55:35,420 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:55:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:55:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-11-03 03:55:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-11-03 03:55:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-03 03:55:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-03 03:55:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-03 03:55:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-03 03:55:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:55:35,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:55:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-03 03:55:35,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-03 03:55:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-03 03:55:35,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-03 03:55:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-03 03:55:35,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-03 03:55:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-11-03 03:55:35,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-11-03 03:55:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:55:35,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:55:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-03 03:55:35,430 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-03 03:55:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_handle_sysrq_char [2022-11-03 03:55:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_handle_sysrq_char [2022-11-03 03:55:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-03 03:55:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-03 03:55:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-11-03 03:55:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-11-03 03:55:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:55:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:55:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-11-03 03:55:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-11-03 03:55:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-03 03:55:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-03 03:55:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-03 03:55:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-03 03:55:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-03 03:55:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-03 03:55:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 03:55:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 03:55:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:55:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:55:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-03 03:55:35,434 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-03 03:55:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:55:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-03 03:55:35,434 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-03 03:55:36,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:55:36,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:55:37,329 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:55:52,834 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:55:54,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:55:54,745 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:55:54,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:54 BoogieIcfgContainer [2022-11-03 03:55:54,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:55:54,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:55:54,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:55:54,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:55:54,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:55:29" (1/3) ... [2022-11-03 03:55:54,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6219fca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:55:54, skipping insertion in model container [2022-11-03 03:55:54,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:34" (2/3) ... [2022-11-03 03:55:54,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6219fca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:55:54, skipping insertion in model container [2022-11-03 03:55:54,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:54" (3/3) ... [2022-11-03 03:55:54,767 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-03 03:55:54,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:55:54,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:55:55,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:55:55,031 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;@3e72e67c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:55:55,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:55:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 1863 states, 1174 states have (on average 1.3568994889267463) internal successors, (1593), 1216 states have internal predecessors, (1593), 555 states have call successors, (555), 133 states have call predecessors, (555), 132 states have return successors, (544), 531 states have call predecessors, (544), 544 states have call successors, (544) [2022-11-03 03:55:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-03 03:55:55,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:55,088 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:55,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1736752305, now seen corresponding path program 1 times [2022-11-03 03:55:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:55,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399558672] [2022-11-03 03:55:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:55:56,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:56,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399558672] [2022-11-03 03:55:56,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399558672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:56,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:56,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763693196] [2022-11-03 03:55:56,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:56,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:56,920 INFO L87 Difference]: Start difference. First operand has 1863 states, 1174 states have (on average 1.3568994889267463) internal successors, (1593), 1216 states have internal predecessors, (1593), 555 states have call successors, (555), 133 states have call predecessors, (555), 132 states have return successors, (544), 531 states have call predecessors, (544), 544 states have call successors, (544) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:55:59,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:01,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:04,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:09,858 INFO L93 Difference]: Finished difference Result 5359 states and 7997 transitions. [2022-11-03 03:56:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 207 [2022-11-03 03:56:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:09,966 INFO L225 Difference]: With dead ends: 5359 [2022-11-03 03:56:09,968 INFO L226 Difference]: Without dead ends: 3516 [2022-11-03 03:56:09,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:09,988 INFO L413 NwaCegarLoop]: 3025 mSDtfsCounter, 2432 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 5397 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 5397 Invalid, 689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 684 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 03:56:10,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-11-03 03:56:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 3493. [2022-11-03 03:56:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2217 states have (on average 1.3468651330626973) internal successors, (2986), 2266 states have internal predecessors, (2986), 1015 states have call successors, (1015), 261 states have call predecessors, (1015), 260 states have return successors, (1083), 979 states have call predecessors, (1083), 1006 states have call successors, (1083) [2022-11-03 03:56:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5084 transitions. [2022-11-03 03:56:10,411 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5084 transitions. Word has length 207 [2022-11-03 03:56:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:10,415 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 5084 transitions. [2022-11-03 03:56:10,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:56:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5084 transitions. [2022-11-03 03:56:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:56:10,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:10,437 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:10,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:56:10,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1214001539, now seen corresponding path program 1 times [2022-11-03 03:56:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:10,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165721412] [2022-11-03 03:56:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:56:11,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165721412] [2022-11-03 03:56:11,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165721412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:11,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:11,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:11,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643125018] [2022-11-03 03:56:11,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:11,260 INFO L87 Difference]: Start difference. First operand 3493 states and 5084 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:56:13,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:15,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:18,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:24,537 INFO L93 Difference]: Finished difference Result 9843 states and 14261 transitions. [2022-11-03 03:56:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:24,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 214 [2022-11-03 03:56:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:24,585 INFO L225 Difference]: With dead ends: 9843 [2022-11-03 03:56:24,585 INFO L226 Difference]: Without dead ends: 6397 [2022-11-03 03:56:24,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:24,602 INFO L413 NwaCegarLoop]: 3282 mSDtfsCounter, 2119 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:24,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 5530 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 808 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-11-03 03:56:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-11-03 03:56:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6371. [2022-11-03 03:56:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6371 states, 4028 states have (on average 1.3413604766633564) internal successors, (5403), 4117 states have internal predecessors, (5403), 1842 states have call successors, (1842), 501 states have call predecessors, (1842), 500 states have return successors, (1971), 1777 states have call predecessors, (1971), 1833 states have call successors, (1971) [2022-11-03 03:56:24,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 9216 transitions. [2022-11-03 03:56:24,962 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 9216 transitions. Word has length 214 [2022-11-03 03:56:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:24,966 INFO L495 AbstractCegarLoop]: Abstraction has 6371 states and 9216 transitions. [2022-11-03 03:56:24,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:56:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 9216 transitions. [2022-11-03 03:56:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:56:24,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:24,976 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:24,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:56:24,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:24,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash -109734932, now seen corresponding path program 1 times [2022-11-03 03:56:24,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:24,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827846119] [2022-11-03 03:56:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:56:25,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:25,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827846119] [2022-11-03 03:56:25,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827846119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:25,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:25,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:25,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391875549] [2022-11-03 03:56:25,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:25,767 INFO L87 Difference]: Start difference. First operand 6371 states and 9216 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:56:27,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:30,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:35,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:38,702 INFO L93 Difference]: Finished difference Result 18072 states and 26306 transitions. [2022-11-03 03:56:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 214 [2022-11-03 03:56:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:38,797 INFO L225 Difference]: With dead ends: 18072 [2022-11-03 03:56:38,797 INFO L226 Difference]: Without dead ends: 11748 [2022-11-03 03:56:38,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:38,846 INFO L413 NwaCegarLoop]: 3934 mSDtfsCounter, 2223 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:38,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 6251 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 838 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2022-11-03 03:56:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11748 states. [2022-11-03 03:56:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11748 to 11702. [2022-11-03 03:56:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11702 states, 7404 states have (on average 1.3398163155051324) internal successors, (9920), 7571 states have internal predecessors, (9920), 3346 states have call successors, (3346), 951 states have call predecessors, (3346), 951 states have return successors, (3841), 3228 states have call predecessors, (3841), 3337 states have call successors, (3841) [2022-11-03 03:56:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11702 states to 11702 states and 17107 transitions. [2022-11-03 03:56:39,738 INFO L78 Accepts]: Start accepts. Automaton has 11702 states and 17107 transitions. Word has length 214 [2022-11-03 03:56:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:39,739 INFO L495 AbstractCegarLoop]: Abstraction has 11702 states and 17107 transitions. [2022-11-03 03:56:39,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:56:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11702 states and 17107 transitions. [2022-11-03 03:56:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 03:56:39,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:39,745 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:39,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:56:39,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:39,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1544384157, now seen corresponding path program 1 times [2022-11-03 03:56:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046433591] [2022-11-03 03:56:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:39,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:56:40,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046433591] [2022-11-03 03:56:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046433591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:40,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638940611] [2022-11-03 03:56:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:40,718 INFO L87 Difference]: Start difference. First operand 11702 states and 17107 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:56:42,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:44,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:49,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:52,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:54,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:58,387 INFO L93 Difference]: Finished difference Result 34660 states and 50659 transitions. [2022-11-03 03:56:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 217 [2022-11-03 03:56:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:58,577 INFO L225 Difference]: With dead ends: 34660 [2022-11-03 03:56:58,578 INFO L226 Difference]: Without dead ends: 23005 [2022-11-03 03:56:58,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:58,655 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 2362 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 6513 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:58,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 6513 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 880 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2022-11-03 03:56:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23005 states. [2022-11-03 03:56:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23005 to 22971. [2022-11-03 03:56:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22971 states, 14563 states have (on average 1.3399711597885051) internal successors, (19514), 14868 states have internal predecessors, (19514), 6526 states have call successors, (6526), 1880 states have call predecessors, (6526), 1881 states have return successors, (7525), 6315 states have call predecessors, (7525), 6517 states have call successors, (7525) [2022-11-03 03:57:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22971 states to 22971 states and 33565 transitions. [2022-11-03 03:57:00,368 INFO L78 Accepts]: Start accepts. Automaton has 22971 states and 33565 transitions. Word has length 217 [2022-11-03 03:57:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:00,369 INFO L495 AbstractCegarLoop]: Abstraction has 22971 states and 33565 transitions. [2022-11-03 03:57:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:57:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22971 states and 33565 transitions. [2022-11-03 03:57:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-03 03:57:00,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:00,374 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:00,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:57:00,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash -839316636, now seen corresponding path program 1 times [2022-11-03 03:57:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:00,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950304916] [2022-11-03 03:57:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:57:01,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950304916] [2022-11-03 03:57:01,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950304916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:01,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:01,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:57:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175924248] [2022-11-03 03:57:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:01,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:57:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:57:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:01,137 INFO L87 Difference]: Start difference. First operand 22971 states and 33565 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:57:03,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:05,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:14,745 INFO L93 Difference]: Finished difference Result 67043 states and 100650 transitions. [2022-11-03 03:57:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 228 [2022-11-03 03:57:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:15,283 INFO L225 Difference]: With dead ends: 67043 [2022-11-03 03:57:15,283 INFO L226 Difference]: Without dead ends: 44119 [2022-11-03 03:57:15,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:15,440 INFO L413 NwaCegarLoop]: 3939 mSDtfsCounter, 2433 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 6141 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:15,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 6141 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 814 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 03:57:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44119 states. [2022-11-03 03:57:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44119 to 43922. [2022-11-03 03:57:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43922 states, 27991 states have (on average 1.343646171983852) internal successors, (37610), 28671 states have internal predecessors, (37610), 12282 states have call successors, (12282), 3688 states have call predecessors, (12282), 3648 states have return successors, (15682), 11731 states have call predecessors, (15682), 12268 states have call successors, (15682) [2022-11-03 03:57:18,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43922 states to 43922 states and 65574 transitions. [2022-11-03 03:57:18,156 INFO L78 Accepts]: Start accepts. Automaton has 43922 states and 65574 transitions. Word has length 228 [2022-11-03 03:57:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:18,157 INFO L495 AbstractCegarLoop]: Abstraction has 43922 states and 65574 transitions. [2022-11-03 03:57:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:57:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43922 states and 65574 transitions. [2022-11-03 03:57:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-03 03:57:18,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:18,508 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:18,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:57:18,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -250457945, now seen corresponding path program 1 times [2022-11-03 03:57:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:18,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029564263] [2022-11-03 03:57:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:18,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:57:19,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:19,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029564263] [2022-11-03 03:57:19,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029564263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:19,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:19,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:57:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108453380] [2022-11-03 03:57:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:19,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:57:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:57:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:19,482 INFO L87 Difference]: Start difference. First operand 43922 states and 65574 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:57:21,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:23,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:29,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:34,370 INFO L93 Difference]: Finished difference Result 87667 states and 130885 transitions. [2022-11-03 03:57:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:34,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 229 [2022-11-03 03:57:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:35,131 INFO L225 Difference]: With dead ends: 87667 [2022-11-03 03:57:35,131 INFO L226 Difference]: Without dead ends: 87664 [2022-11-03 03:57:35,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:35,182 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 2429 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2429 SdHoareTripleChecker+Valid, 6504 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:35,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2429 Valid, 6504 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 882 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 03:57:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87664 states. [2022-11-03 03:57:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87664 to 87633. [2022-11-03 03:57:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87633 states, 55856 states have (on average 1.343848467487826) internal successors, (75062), 57206 states have internal predecessors, (75062), 24488 states have call successors, (24488), 7366 states have call predecessors, (24488), 7288 states have return successors, (31302), 23397 states have call predecessors, (31302), 24474 states have call successors, (31302) [2022-11-03 03:57:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87633 states to 87633 states and 130852 transitions. [2022-11-03 03:57:40,964 INFO L78 Accepts]: Start accepts. Automaton has 87633 states and 130852 transitions. Word has length 229 [2022-11-03 03:57:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:40,965 INFO L495 AbstractCegarLoop]: Abstraction has 87633 states and 130852 transitions. [2022-11-03 03:57:40,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:57:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand 87633 states and 130852 transitions. [2022-11-03 03:57:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 03:57:40,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:40,981 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:40,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:57:40,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash 824297159, now seen corresponding path program 1 times [2022-11-03 03:57:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307212318] [2022-11-03 03:57:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:57:41,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:41,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307212318] [2022-11-03 03:57:41,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307212318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:41,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:41,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:57:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303981335] [2022-11-03 03:57:41,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:41,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:57:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:57:41,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:41,608 INFO L87 Difference]: Start difference. First operand 87633 states and 130852 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:57:43,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:45,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:51,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:52,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:57,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:57,909 INFO L93 Difference]: Finished difference Result 87657 states and 130875 transitions. [2022-11-03 03:57:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:57,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 230 [2022-11-03 03:57:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:58,462 INFO L225 Difference]: With dead ends: 87657 [2022-11-03 03:57:58,463 INFO L226 Difference]: Without dead ends: 87654 [2022-11-03 03:57:58,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:57:58,513 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 2426 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 6507 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 882 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2022-11-03 03:57:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87654 states. [2022-11-03 03:58:01,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87654 to 87634. [2022-11-03 03:58:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87634 states, 55857 states have (on average 1.3438423116171652) internal successors, (75063), 57207 states have internal predecessors, (75063), 24488 states have call successors, (24488), 7366 states have call predecessors, (24488), 7288 states have return successors, (31302), 23397 states have call predecessors, (31302), 24474 states have call successors, (31302) [2022-11-03 03:58:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87634 states to 87634 states and 130853 transitions. [2022-11-03 03:58:02,969 INFO L78 Accepts]: Start accepts. Automaton has 87634 states and 130853 transitions. Word has length 230 [2022-11-03 03:58:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:02,970 INFO L495 AbstractCegarLoop]: Abstraction has 87634 states and 130853 transitions. [2022-11-03 03:58:02,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:58:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 87634 states and 130853 transitions. [2022-11-03 03:58:02,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-03 03:58:02,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:02,976 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:02,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:58:02,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:58:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash -218028118, now seen corresponding path program 1 times [2022-11-03 03:58:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:02,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443379314] [2022-11-03 03:58:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:58:03,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:03,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443379314] [2022-11-03 03:58:03,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443379314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:03,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:03,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506536042] [2022-11-03 03:58:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:03,883 INFO L87 Difference]: Start difference. First operand 87634 states and 130853 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:58:05,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:08,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:11,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:13,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:18,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:21,205 INFO L93 Difference]: Finished difference Result 87658 states and 130876 transitions. [2022-11-03 03:58:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:21,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 231 [2022-11-03 03:58:21,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:21,724 INFO L225 Difference]: With dead ends: 87658 [2022-11-03 03:58:21,725 INFO L226 Difference]: Without dead ends: 87655 [2022-11-03 03:58:21,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:21,777 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 2423 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:21,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 6510 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2022-11-03 03:58:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87655 states. [2022-11-03 03:58:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87655 to 87635. [2022-11-03 03:58:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87635 states, 55858 states have (on average 1.343836155966916) internal successors, (75064), 57208 states have internal predecessors, (75064), 24488 states have call successors, (24488), 7366 states have call predecessors, (24488), 7288 states have return successors, (31302), 23397 states have call predecessors, (31302), 24474 states have call successors, (31302) [2022-11-03 03:58:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87635 states to 87635 states and 130854 transitions. [2022-11-03 03:58:26,159 INFO L78 Accepts]: Start accepts. Automaton has 87635 states and 130854 transitions. Word has length 231 [2022-11-03 03:58:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:26,160 INFO L495 AbstractCegarLoop]: Abstraction has 87635 states and 130854 transitions. [2022-11-03 03:58:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:58:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 87635 states and 130854 transitions. [2022-11-03 03:58:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-03 03:58:26,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:26,164 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:58:26,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:58:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1829631530, now seen corresponding path program 1 times [2022-11-03 03:58:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109657183] [2022-11-03 03:58:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:58:26,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:26,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109657183] [2022-11-03 03:58:26,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109657183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:26,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:26,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:26,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691503800] [2022-11-03 03:58:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:26,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:26,775 INFO L87 Difference]: Start difference. First operand 87635 states and 130854 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:58:28,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:31,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:37,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:43,788 INFO L93 Difference]: Finished difference Result 161453 states and 249029 transitions. [2022-11-03 03:58:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:43,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 232 [2022-11-03 03:58:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:44,994 INFO L225 Difference]: With dead ends: 161453 [2022-11-03 03:58:44,994 INFO L226 Difference]: Without dead ends: 161423 [2022-11-03 03:58:45,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:45,142 INFO L413 NwaCegarLoop]: 3818 mSDtfsCounter, 2280 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:45,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 5965 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 799 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 03:58:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161423 states. [2022-11-03 03:58:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161423 to 161299. [2022-11-03 03:58:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161299 states, 103294 states have (on average 1.3445601874261817) internal successors, (138885), 106088 states have internal predecessors, (138885), 44300 states have call successors, (44300), 14042 states have call predecessors, (44300), 13704 states have return successors, (65598), 41809 states have call predecessors, (65598), 44278 states have call successors, (65598)