./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:52:58,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:52:58,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:52:58,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:52:58,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:52:58,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:52:58,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:52:58,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:52:58,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:52:58,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:52:58,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:52:58,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:52:58,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:52:58,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:52:58,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:52:58,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:52:58,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:52:58,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:52:58,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:52:58,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:52:58,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:52:58,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:52:58,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:52:58,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:52:58,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:52:58,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:52:58,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:52:58,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:52:58,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:52:58,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:52:58,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:52:58,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:52:58,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:52:58,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:52:58,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:52:58,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:52:58,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:52:58,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:52:58,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:52:58,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:52:58,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:52:58,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:52:58,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:52:58,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:52:58,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:52:58,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:52:58,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:52:58,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:52:58,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:52:58,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:52:58,309 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:52:58,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:52:58,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:52:58,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:52:58,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:52:58,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:52:58,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:52:58,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:52:58,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:52:58,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:52:58,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:52:58,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:52:58,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:52:58,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:52:58,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:52:58,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:52:58,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:52:58,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:52:58,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:52:58,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:52:58,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:52:58,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:52:58,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:52:58,314 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2021-12-16 03:52:58,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:52:58,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:52:58,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:52:58,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:52:58,547 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:52:58,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-16 03:52:58,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4925fc33/bdf524bc2fdf48edabc0833e44c36ff0/FLAGf3a7c4d5d [2021-12-16 03:52:59,182 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:52:59,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-16 03:52:59,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4925fc33/bdf524bc2fdf48edabc0833e44c36ff0/FLAGf3a7c4d5d [2021-12-16 03:52:59,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4925fc33/bdf524bc2fdf48edabc0833e44c36ff0 [2021-12-16 03:52:59,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:52:59,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:52:59,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:52:59,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:52:59,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:52:59,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:52:59" (1/1) ... [2021-12-16 03:52:59,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbefc91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:52:59, skipping insertion in model container [2021-12-16 03:52:59,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:52:59" (1/1) ... [2021-12-16 03:52:59,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:52:59,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:53:00,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2021-12-16 03:53:00,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:53:00,627 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:53:00,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2021-12-16 03:53:00,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:53:00,921 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:53:00,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00 WrapperNode [2021-12-16 03:53:00,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:53:00,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:53:00,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:53:00,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:53:00,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:00,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,104 INFO L137 Inliner]: procedures = 257, calls = 1499, calls flagged for inlining = 108, calls inlined = 98, statements flattened = 3721 [2021-12-16 03:53:01,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:53:01,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:53:01,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:53:01,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:53:01,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:53:01,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:53:01,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:53:01,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:53:01,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (1/1) ... [2021-12-16 03:53:01,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:53:01,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:53:01,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:53:01,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:53:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-16 03:53:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-16 03:53:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2021-12-16 03:53:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2021-12-16 03:53:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-16 03:53:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-16 03:53:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2021-12-16 03:53:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2021-12-16 03:53:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2021-12-16 03:53:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2021-12-16 03:53:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:53:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:53:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2021-12-16 03:53:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2021-12-16 03:53:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-12-16 03:53:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-12-16 03:53:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2021-12-16 03:53:01,370 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2021-12-16 03:53:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:53:01,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:53:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2021-12-16 03:53:01,370 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2021-12-16 03:53:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2021-12-16 03:53:01,370 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2021-12-16 03:53:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2021-12-16 03:53:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2021-12-16 03:53:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2021-12-16 03:53:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2021-12-16 03:53:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-16 03:53:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-16 03:53:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:53:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:53:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2021-12-16 03:53:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2021-12-16 03:53:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:53:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:53:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-16 03:53:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-16 03:53:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 03:53:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 03:53:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2021-12-16 03:53:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2021-12-16 03:53:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2021-12-16 03:53:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2021-12-16 03:53:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2021-12-16 03:53:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2021-12-16 03:53:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 03:53:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 03:53:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:53:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:53:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2021-12-16 03:53:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2021-12-16 03:53:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:53:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 03:53:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 03:53:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 03:53:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2021-12-16 03:53:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2021-12-16 03:53:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-16 03:53:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-16 03:53:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:53:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2021-12-16 03:53:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2021-12-16 03:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 03:53:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 03:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2021-12-16 03:53:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2021-12-16 03:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-16 03:53:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-16 03:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:53:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 03:53:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 03:53:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2021-12-16 03:53:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2021-12-16 03:53:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 03:53:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 03:53:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:53:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:53:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 03:53:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 03:53:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2021-12-16 03:53:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2021-12-16 03:53:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-16 03:53:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-16 03:53:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-16 03:53:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-16 03:53:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:53:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 03:53:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 03:53:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2021-12-16 03:53:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2021-12-16 03:53:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-16 03:53:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-16 03:53:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:53:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-16 03:53:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-16 03:53:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:53:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2021-12-16 03:53:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2021-12-16 03:53:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-12-16 03:53:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-12-16 03:53:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:53:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:53:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2021-12-16 03:53:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2021-12-16 03:53:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 03:53:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 03:53:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:53:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:53:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-16 03:53:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-16 03:53:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-16 03:53:01,384 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-16 03:53:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2021-12-16 03:53:01,384 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2021-12-16 03:53:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:53:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2021-12-16 03:53:01,385 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2021-12-16 03:53:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-12-16 03:53:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-12-16 03:53:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-16 03:53:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-16 03:53:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:53:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:53:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:53:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2021-12-16 03:53:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2021-12-16 03:53:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2021-12-16 03:53:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2021-12-16 03:53:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:53:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2021-12-16 03:53:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2021-12-16 03:53:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:53:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:53:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:53:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2021-12-16 03:53:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2021-12-16 03:53:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2021-12-16 03:53:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2021-12-16 03:53:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-16 03:53:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-16 03:53:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-16 03:53:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-16 03:53:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2021-12-16 03:53:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2021-12-16 03:53:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-16 03:53:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-16 03:53:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-12-16 03:53:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-12-16 03:53:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-16 03:53:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-16 03:53:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 03:53:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 03:53:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2021-12-16 03:53:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2021-12-16 03:53:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-16 03:53:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-16 03:53:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:53:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-16 03:53:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-16 03:53:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:53:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:53:01,956 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:53:01,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:53:08,740 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:53:08,757 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:53:08,757 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:53:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:53:08 BoogieIcfgContainer [2021-12-16 03:53:08,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:53:08,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:53:08,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:53:08,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:53:08,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:52:59" (1/3) ... [2021-12-16 03:53:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f204512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:53:08, skipping insertion in model container [2021-12-16 03:53:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:00" (2/3) ... [2021-12-16 03:53:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f204512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:53:08, skipping insertion in model container [2021-12-16 03:53:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:53:08" (3/3) ... [2021-12-16 03:53:08,767 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-16 03:53:08,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:53:08,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:53:08,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:53:08,819 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:53:08,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:53:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 1126 states, 812 states have (on average 1.3214285714285714) internal successors, (1073), 834 states have internal predecessors, (1073), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) [2021-12-16 03:53:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 03:53:08,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:08,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:08,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1863154009, now seen corresponding path program 1 times [2021-12-16 03:53:08,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:08,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387491788] [2021-12-16 03:53:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:08,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:09,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:09,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387491788] [2021-12-16 03:53:09,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387491788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:09,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:09,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:09,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998295319] [2021-12-16 03:53:09,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:09,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:09,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:09,204 INFO L87 Difference]: Start difference. First operand has 1126 states, 812 states have (on average 1.3214285714285714) internal successors, (1073), 834 states have internal predecessors, (1073), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:09,342 INFO L93 Difference]: Finished difference Result 3346 states and 4691 transitions. [2021-12-16 03:53:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:09,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 03:53:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:09,368 INFO L225 Difference]: With dead ends: 3346 [2021-12-16 03:53:09,369 INFO L226 Difference]: Without dead ends: 2213 [2021-12-16 03:53:09,379 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:09,382 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1505 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:09,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 3297 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2021-12-16 03:53:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2209. [2021-12-16 03:53:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1593 states have (on average 1.3138731952291274) internal successors, (2093), 1627 states have internal predecessors, (2093), 471 states have call successors, (471), 145 states have call predecessors, (471), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-16 03:53:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3028 transitions. [2021-12-16 03:53:09,518 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3028 transitions. Word has length 16 [2021-12-16 03:53:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:09,519 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3028 transitions. [2021-12-16 03:53:09,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3028 transitions. [2021-12-16 03:53:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 03:53:09,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:09,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:09,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:53:09,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 805705890, now seen corresponding path program 1 times [2021-12-16 03:53:09,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:09,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737776157] [2021-12-16 03:53:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:09,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:09,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:09,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737776157] [2021-12-16 03:53:09,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737776157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:09,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:09,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:09,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290290935] [2021-12-16 03:53:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:09,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:09,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:09,673 INFO L87 Difference]: Start difference. First operand 2209 states and 3028 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:09,728 INFO L93 Difference]: Finished difference Result 2235 states and 3060 transitions. [2021-12-16 03:53:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:09,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 03:53:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:09,737 INFO L225 Difference]: With dead ends: 2235 [2021-12-16 03:53:09,737 INFO L226 Difference]: Without dead ends: 2222 [2021-12-16 03:53:09,740 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:09,742 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 1525 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:09,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1561 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-12-16 03:53:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2209. [2021-12-16 03:53:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1593 states have (on average 1.3132454488386691) internal successors, (2092), 1627 states have internal predecessors, (2092), 471 states have call successors, (471), 145 states have call predecessors, (471), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-16 03:53:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3027 transitions. [2021-12-16 03:53:09,803 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3027 transitions. Word has length 19 [2021-12-16 03:53:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:09,803 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3027 transitions. [2021-12-16 03:53:09,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3027 transitions. [2021-12-16 03:53:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 03:53:09,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:09,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:09,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:53:09,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:09,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 862964192, now seen corresponding path program 1 times [2021-12-16 03:53:09,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:09,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765817331] [2021-12-16 03:53:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:09,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:09,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:09,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765817331] [2021-12-16 03:53:09,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765817331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:09,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:09,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:09,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75913856] [2021-12-16 03:53:09,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:09,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:09,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:09,881 INFO L87 Difference]: Start difference. First operand 2209 states and 3027 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:09,939 INFO L93 Difference]: Finished difference Result 2211 states and 3028 transitions. [2021-12-16 03:53:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:09,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 03:53:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:09,947 INFO L225 Difference]: With dead ends: 2211 [2021-12-16 03:53:09,947 INFO L226 Difference]: Without dead ends: 2208 [2021-12-16 03:53:09,949 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:09,949 INFO L933 BasicCegarLoop]: 1527 mSDtfsCounter, 1512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:09,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1527 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:09,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-12-16 03:53:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2208. [2021-12-16 03:53:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1593 states have (on average 1.3126177024482109) internal successors, (2091), 1626 states have internal predecessors, (2091), 470 states have call successors, (470), 145 states have call predecessors, (470), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-16 03:53:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3025 transitions. [2021-12-16 03:53:10,011 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3025 transitions. Word has length 19 [2021-12-16 03:53:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:10,012 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 3025 transitions. [2021-12-16 03:53:10,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3025 transitions. [2021-12-16 03:53:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 03:53:10,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:10,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:53:10,027 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash 981610294, now seen corresponding path program 1 times [2021-12-16 03:53:10,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:10,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735042167] [2021-12-16 03:53:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:10,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:10,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:10,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735042167] [2021-12-16 03:53:10,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735042167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:10,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:10,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:10,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985992482] [2021-12-16 03:53:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:10,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:10,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:10,083 INFO L87 Difference]: Start difference. First operand 2208 states and 3025 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:10,185 INFO L93 Difference]: Finished difference Result 2210 states and 3026 transitions. [2021-12-16 03:53:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-16 03:53:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:10,194 INFO L225 Difference]: With dead ends: 2210 [2021-12-16 03:53:10,194 INFO L226 Difference]: Without dead ends: 2207 [2021-12-16 03:53:10,195 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:10,196 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:10,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 1525 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-12-16 03:53:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-12-16 03:53:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1593 states have (on average 1.3119899560577526) internal successors, (2090), 1625 states have internal predecessors, (2090), 469 states have call successors, (469), 145 states have call predecessors, (469), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-16 03:53:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3023 transitions. [2021-12-16 03:53:10,266 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3023 transitions. Word has length 20 [2021-12-16 03:53:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:10,267 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3023 transitions. [2021-12-16 03:53:10,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3023 transitions. [2021-12-16 03:53:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 03:53:10,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:10,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:10,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:53:10,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 364677027, now seen corresponding path program 1 times [2021-12-16 03:53:10,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:10,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345291581] [2021-12-16 03:53:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:10,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:10,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:10,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345291581] [2021-12-16 03:53:10,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345291581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:10,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:10,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:10,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180436941] [2021-12-16 03:53:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:10,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:10,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:10,325 INFO L87 Difference]: Start difference. First operand 2207 states and 3023 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:10,452 INFO L93 Difference]: Finished difference Result 6579 states and 9160 transitions. [2021-12-16 03:53:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:10,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-16 03:53:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:10,468 INFO L225 Difference]: With dead ends: 6579 [2021-12-16 03:53:10,468 INFO L226 Difference]: Without dead ends: 4375 [2021-12-16 03:53:10,475 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:10,476 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 1512 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:10,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 3594 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-12-16 03:53:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 4369. [2021-12-16 03:53:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 3158 states have (on average 1.3128562381253959) internal successors, (4146), 3218 states have internal predecessors, (4146), 928 states have call successors, (928), 284 states have call predecessors, (928), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2021-12-16 03:53:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6064 transitions. [2021-12-16 03:53:10,624 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6064 transitions. Word has length 21 [2021-12-16 03:53:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:10,624 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 6064 transitions. [2021-12-16 03:53:10,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6064 transitions. [2021-12-16 03:53:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-16 03:53:10,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:10,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:10,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:53:10,626 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1580380199, now seen corresponding path program 1 times [2021-12-16 03:53:10,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:10,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064669874] [2021-12-16 03:53:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:10,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:10,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:10,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064669874] [2021-12-16 03:53:10,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064669874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:10,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:10,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:10,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752093384] [2021-12-16 03:53:10,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:10,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:10,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:10,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:10,682 INFO L87 Difference]: Start difference. First operand 4369 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:10,771 INFO L93 Difference]: Finished difference Result 4371 states and 6065 transitions. [2021-12-16 03:53:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:10,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-16 03:53:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:10,789 INFO L225 Difference]: With dead ends: 4371 [2021-12-16 03:53:10,789 INFO L226 Difference]: Without dead ends: 4368 [2021-12-16 03:53:10,793 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:10,794 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 1505 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:10,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1523 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2021-12-16 03:53:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4368. [2021-12-16 03:53:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 3158 states have (on average 1.312539582013933) internal successors, (4145), 3217 states have internal predecessors, (4145), 927 states have call successors, (927), 284 states have call predecessors, (927), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2021-12-16 03:53:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 6062 transitions. [2021-12-16 03:53:10,936 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 6062 transitions. Word has length 22 [2021-12-16 03:53:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:10,937 INFO L470 AbstractCegarLoop]: Abstraction has 4368 states and 6062 transitions. [2021-12-16 03:53:10,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 6062 transitions. [2021-12-16 03:53:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 03:53:10,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:10,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:10,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:53:10,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1747607194, now seen corresponding path program 1 times [2021-12-16 03:53:10,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:10,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460721389] [2021-12-16 03:53:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:10,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:10,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460721389] [2021-12-16 03:53:10,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460721389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:10,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:10,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:10,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228544048] [2021-12-16 03:53:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:10,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:10,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:10,993 INFO L87 Difference]: Start difference. First operand 4368 states and 6062 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:11,114 INFO L93 Difference]: Finished difference Result 4370 states and 6063 transitions. [2021-12-16 03:53:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:11,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-16 03:53:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:11,131 INFO L225 Difference]: With dead ends: 4370 [2021-12-16 03:53:11,131 INFO L226 Difference]: Without dead ends: 4358 [2021-12-16 03:53:11,133 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:53:11,133 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1502 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:11,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1522 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:11,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2021-12-16 03:53:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 4358. [2021-12-16 03:53:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 3149 states have (on average 1.3124801524293426) internal successors, (4133), 3207 states have internal predecessors, (4133), 926 states have call successors, (926), 284 states have call predecessors, (926), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2021-12-16 03:53:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6049 transitions. [2021-12-16 03:53:11,259 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6049 transitions. Word has length 23 [2021-12-16 03:53:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:11,260 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 6049 transitions. [2021-12-16 03:53:11,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6049 transitions. [2021-12-16 03:53:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 03:53:11,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:11,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:11,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:53:11,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash 771988741, now seen corresponding path program 1 times [2021-12-16 03:53:11,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:11,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183243837] [2021-12-16 03:53:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:11,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:53:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:11,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:53:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 03:53:11,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:11,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183243837] [2021-12-16 03:53:11,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183243837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:11,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:11,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:53:11,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111467461] [2021-12-16 03:53:11,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:11,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:53:11,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:53:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:53:11,343 INFO L87 Difference]: Start difference. First operand 4358 states and 6049 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:53:13,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:17,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:19,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:20,044 INFO L93 Difference]: Finished difference Result 13542 states and 18891 transitions. [2021-12-16 03:53:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:53:20,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-12-16 03:53:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:20,100 INFO L225 Difference]: With dead ends: 13542 [2021-12-16 03:53:20,100 INFO L226 Difference]: Without dead ends: 9187 [2021-12-16 03:53:20,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:20,121 INFO L933 BasicCegarLoop]: 1870 mSDtfsCounter, 1918 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 733 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:20,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 3958 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 866 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2021-12-16 03:53:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9187 states. [2021-12-16 03:53:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9187 to 8952. [2021-12-16 03:53:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8952 states, 6451 states have (on average 1.3001085103084793) internal successors, (8387), 6589 states have internal predecessors, (8387), 1868 states have call successors, (1868), 562 states have call predecessors, (1868), 632 states have return successors, (2228), 1888 states have call predecessors, (2228), 1864 states have call successors, (2228) [2021-12-16 03:53:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8952 states to 8952 states and 12483 transitions. [2021-12-16 03:53:20,525 INFO L78 Accepts]: Start accepts. Automaton has 8952 states and 12483 transitions. Word has length 49 [2021-12-16 03:53:20,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:20,525 INFO L470 AbstractCegarLoop]: Abstraction has 8952 states and 12483 transitions. [2021-12-16 03:53:20,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:53:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8952 states and 12483 transitions. [2021-12-16 03:53:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 03:53:20,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:20,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:20,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:53:20,533 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2059784186, now seen corresponding path program 1 times [2021-12-16 03:53:20,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752903657] [2021-12-16 03:53:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:20,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 03:53:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:53:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:20,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 03:53:20,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:20,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752903657] [2021-12-16 03:53:20,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752903657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:20,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:20,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:53:20,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234390260] [2021-12-16 03:53:20,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:20,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:53:20,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:53:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:53:20,657 INFO L87 Difference]: Start difference. First operand 8952 states and 12483 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:53:21,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:25,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:27,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:30,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:32,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:34,435 INFO L93 Difference]: Finished difference Result 22686 states and 31683 transitions. [2021-12-16 03:53:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:53:34,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2021-12-16 03:53:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:34,492 INFO L225 Difference]: With dead ends: 22686 [2021-12-16 03:53:34,492 INFO L226 Difference]: Without dead ends: 13737 [2021-12-16 03:53:34,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:34,526 INFO L933 BasicCegarLoop]: 2799 mSDtfsCounter, 1643 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 560 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:34,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 5372 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 926 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2021-12-16 03:53:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13737 states. [2021-12-16 03:53:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13737 to 13398. [2021-12-16 03:53:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13398 states, 9657 states have (on average 1.2990576783680232) internal successors, (12545), 9863 states have internal predecessors, (12545), 2790 states have call successors, (2790), 844 states have call predecessors, (2790), 950 states have return successors, (3326), 2822 states have call predecessors, (3326), 2786 states have call successors, (3326) [2021-12-16 03:53:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13398 states to 13398 states and 18661 transitions. [2021-12-16 03:53:35,045 INFO L78 Accepts]: Start accepts. Automaton has 13398 states and 18661 transitions. Word has length 61 [2021-12-16 03:53:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:35,046 INFO L470 AbstractCegarLoop]: Abstraction has 13398 states and 18661 transitions. [2021-12-16 03:53:35,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:53:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 13398 states and 18661 transitions. [2021-12-16 03:53:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 03:53:35,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:35,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:35,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:53:35,133 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1712225285, now seen corresponding path program 1 times [2021-12-16 03:53:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:35,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452300405] [2021-12-16 03:53:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:35,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 03:53:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:53:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-16 03:53:35,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:35,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452300405] [2021-12-16 03:53:35,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452300405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:35,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:35,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:53:35,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937771177] [2021-12-16 03:53:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:35,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:53:35,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:53:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:35,315 INFO L87 Difference]: Start difference. First operand 13398 states and 18661 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 03:53:37,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:38,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:40,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:44,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:45,405 INFO L93 Difference]: Finished difference Result 27244 states and 38474 transitions. [2021-12-16 03:53:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:53:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2021-12-16 03:53:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:45,456 INFO L225 Difference]: With dead ends: 27244 [2021-12-16 03:53:45,456 INFO L226 Difference]: Without dead ends: 13849 [2021-12-16 03:53:45,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:53:45,499 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 387 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 261 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:45,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 4559 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 968 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2021-12-16 03:53:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13849 states. [2021-12-16 03:53:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13849 to 13434. [2021-12-16 03:53:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13434 states, 9693 states have (on average 1.2979469720416796) internal successors, (12581), 9899 states have internal predecessors, (12581), 2790 states have call successors, (2790), 844 states have call predecessors, (2790), 950 states have return successors, (3326), 2822 states have call predecessors, (3326), 2786 states have call successors, (3326) [2021-12-16 03:53:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 18697 transitions. [2021-12-16 03:53:46,003 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 18697 transitions. Word has length 73 [2021-12-16 03:53:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:46,004 INFO L470 AbstractCegarLoop]: Abstraction has 13434 states and 18697 transitions. [2021-12-16 03:53:46,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 03:53:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 18697 transitions. [2021-12-16 03:53:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 03:53:46,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:46,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:46,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 03:53:46,014 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1032166915, now seen corresponding path program 1 times [2021-12-16 03:53:46,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:46,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668920485] [2021-12-16 03:53:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:46,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 03:53:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:53:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-16 03:53:46,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668920485] [2021-12-16 03:53:46,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668920485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:46,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:46,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:53:46,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851561370] [2021-12-16 03:53:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:46,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:53:46,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:53:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:46,160 INFO L87 Difference]: Start difference. First operand 13434 states and 18697 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 03:53:48,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:52,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:54,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:53:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:54,565 INFO L93 Difference]: Finished difference Result 30005 states and 42659 transitions. [2021-12-16 03:53:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:53:54,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-12-16 03:53:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:54,629 INFO L225 Difference]: With dead ends: 30005 [2021-12-16 03:53:54,630 INFO L226 Difference]: Without dead ends: 16574 [2021-12-16 03:53:54,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:53:54,667 INFO L933 BasicCegarLoop]: 1741 mSDtfsCounter, 2014 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 643 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:54,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 3949 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 770 Invalid, 3 Unknown, 0 Unchecked, 7.8s Time] [2021-12-16 03:53:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16574 states. [2021-12-16 03:53:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16574 to 13406. [2021-12-16 03:53:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13406 states, 9673 states have (on average 1.2969089217409284) internal successors, (12545), 9879 states have internal predecessors, (12545), 2782 states have call successors, (2782), 844 states have call predecessors, (2782), 950 states have return successors, (3314), 2814 states have call predecessors, (3314), 2778 states have call successors, (3314) [2021-12-16 03:53:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 18641 transitions. [2021-12-16 03:53:55,233 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 18641 transitions. Word has length 73 [2021-12-16 03:53:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:55,234 INFO L470 AbstractCegarLoop]: Abstraction has 13406 states and 18641 transitions. [2021-12-16 03:53:55,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 03:53:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 18641 transitions. [2021-12-16 03:53:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 03:53:55,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:55,253 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:55,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 03:53:55,253 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash 734894962, now seen corresponding path program 1 times [2021-12-16 03:53:55,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061387780] [2021-12-16 03:53:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:55,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:53:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:53:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:53:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:53:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:53:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:53:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:53:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:53:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:53:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 03:53:55,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:55,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061387780] [2021-12-16 03:53:55,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061387780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:55,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:55,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:53:55,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70181452] [2021-12-16 03:53:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:55,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:53:55,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:53:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:55,527 INFO L87 Difference]: Start difference. First operand 13406 states and 18641 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 03:53:57,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:01,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:04,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:07,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []