./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 ae007674 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-dev-ae00767 [2021-12-28 03:50:59,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:50:59,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:50:59,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:50:59,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:50:59,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:50:59,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:50:59,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:50:59,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:50:59,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:50:59,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:50:59,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:50:59,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:50:59,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:50:59,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:50:59,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:50:59,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:50:59,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:50:59,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:50:59,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:50:59,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:50:59,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:50:59,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:50:59,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:50:59,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:50:59,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:50:59,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:50:59,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:50:59,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:50:59,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:50:59,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:50:59,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:50:59,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:50:59,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:50:59,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:50:59,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:50:59,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:50:59,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:50:59,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:50:59,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:50:59,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:50:59,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:50:59,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:50:59,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:50:59,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:50:59,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:50:59,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:50:59,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:50:59,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:50:59,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:50:59,449 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:50:59,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:50:59,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:50:59,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:50:59,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:50:59,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:50:59,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:50:59,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:50:59,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:50:59,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:50:59,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:50:59,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:50:59,458 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:50:59,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:50:59,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:50:59,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2021-12-28 03:50:59,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:50:59,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:50:59,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:50:59,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:50:59,785 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:50:59,786 INFO L432 ainManager$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 [2021-12-28 03:50:59,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f305eaf00/a14b9ced98c4410f9f484ac0b441e0f7/FLAG1aeb85751 [2021-12-28 03:51:00,566 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:51:00,567 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 [2021-12-28 03:51:00,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f305eaf00/a14b9ced98c4410f9f484ac0b441e0f7/FLAG1aeb85751 [2021-12-28 03:51:00,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f305eaf00/a14b9ced98c4410f9f484ac0b441e0f7 [2021-12-28 03:51:00,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:51:00,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:51:00,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:51:00,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:51:00,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:51:00,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:51:00" (1/1) ... [2021-12-28 03:51:00,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656347d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:00, skipping insertion in model container [2021-12-28 03:51:00,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:51:00" (1/1) ... [2021-12-28 03:51:00,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:51:00,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:51:02,216 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] [2021-12-28 03:51:02,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:51:02,321 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:51:02,633 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] [2021-12-28 03:51:02,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:51:02,824 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:51:02,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02 WrapperNode [2021-12-28 03:51:02,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:51:02,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:51:02,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:51:02,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:51:02,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:02,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,075 INFO L137 Inliner]: procedures = 257, calls = 1499, calls flagged for inlining = 108, calls inlined = 98, statements flattened = 3721 [2021-12-28 03:51:03,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:51:03,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:51:03,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:51:03,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:51:03,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:51:03,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:51:03,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:51:03,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:51:03,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (1/1) ... [2021-12-28 03:51:03,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:51:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:51:03,384 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) [2021-12-28 03:51:03,408 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 [2021-12-28 03:51:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-28 03:51:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-28 03:51:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2021-12-28 03:51:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2021-12-28 03:51:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-28 03:51:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-28 03:51:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2021-12-28 03:51:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2021-12-28 03:51:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2021-12-28 03:51:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2021-12-28 03:51:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:51:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:51:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2021-12-28 03:51:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2021-12-28 03:51:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-12-28 03:51:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-12-28 03:51:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2021-12-28 03:51:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2021-12-28 03:51:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:51:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:51:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2021-12-28 03:51:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2021-12-28 03:51:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2021-12-28 03:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2021-12-28 03:51:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2021-12-28 03:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2021-12-28 03:51:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2021-12-28 03:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2021-12-28 03:51:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-28 03:51:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-28 03:51:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:51:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:51:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2021-12-28 03:51:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2021-12-28 03:51:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:51:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:51:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:51:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:51:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:51:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:51:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2021-12-28 03:51:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2021-12-28 03:51:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2021-12-28 03:51:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2021-12-28 03:51:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2021-12-28 03:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2021-12-28 03:51:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:51:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:51:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2021-12-28 03:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2021-12-28 03:51:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:51:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:51:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:51:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-28 03:51:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2021-12-28 03:51:03,434 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2021-12-28 03:51:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-28 03:51:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-28 03:51:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:51:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2021-12-28 03:51:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2021-12-28 03:51:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:51:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2021-12-28 03:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2021-12-28 03:51:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:51:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-28 03:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-28 03:51:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:51:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:51:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:51:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2021-12-28 03:51:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2021-12-28 03:51:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:51:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:51:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:51:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:51:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:51:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:51:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2021-12-28 03:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2021-12-28 03:51:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-28 03:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-28 03:51:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-28 03:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-28 03:51:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:51:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:51:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2021-12-28 03:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2021-12-28 03:51:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:51:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:51:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-28 03:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-28 03:51:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:51:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2021-12-28 03:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2021-12-28 03:51:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-12-28 03:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-12-28 03:51:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:51:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2021-12-28 03:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2021-12-28 03:51:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:51:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:51:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:51:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:51:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-28 03:51:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-28 03:51:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-28 03:51:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-28 03:51:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2021-12-28 03:51:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2021-12-28 03:51:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:51:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2021-12-28 03:51:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2021-12-28 03:51:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-12-28 03:51:03,448 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-12-28 03:51:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:51:03,448 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:51:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:51:03,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:51:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:51:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2021-12-28 03:51:03,451 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2021-12-28 03:51:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2021-12-28 03:51:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2021-12-28 03:51:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:51:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2021-12-28 03:51:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2021-12-28 03:51:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:51:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:51:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:51:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2021-12-28 03:51:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2021-12-28 03:51:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2021-12-28 03:51:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2021-12-28 03:51:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-28 03:51:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-28 03:51:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 03:51:03,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 03:51:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2021-12-28 03:51:03,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2021-12-28 03:51:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-28 03:51:03,458 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-28 03:51:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-12-28 03:51:03,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-12-28 03:51:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-28 03:51:03,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-28 03:51:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:51:03,459 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:51:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2021-12-28 03:51:03,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2021-12-28 03:51:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-28 03:51:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-28 03:51:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:51:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-28 03:51:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-28 03:51:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:51:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:51:04,250 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:51:04,253 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:51:10,259 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:51:10,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:51:10,294 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:51:10,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:51:10 BoogieIcfgContainer [2021-12-28 03:51:10,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:51:10,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:51:10,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:51:10,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:51:10,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:51:00" (1/3) ... [2021-12-28 03:51:10,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e1af48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:51:10, skipping insertion in model container [2021-12-28 03:51:10,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:02" (2/3) ... [2021-12-28 03:51:10,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e1af48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:51:10, skipping insertion in model container [2021-12-28 03:51:10,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:51:10" (3/3) ... [2021-12-28 03:51:10,306 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-28 03:51:10,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:51:10,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:51:10,362 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:51:10,377 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 [2021-12-28 03:51:10,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:51:10,419 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) [2021-12-28 03:51:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 03:51:10,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:10,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:10,429 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:10,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:10,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1863154009, now seen corresponding path program 1 times [2021-12-28 03:51:10,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766931090] [2021-12-28 03:51:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:10,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:10,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766931090] [2021-12-28 03:51:10,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766931090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:10,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:10,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:10,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2255981] [2021-12-28 03:51:10,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:10,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:10,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:10,852 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) [2021-12-28 03:51:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:11,070 INFO L93 Difference]: Finished difference Result 3346 states and 4691 transitions. [2021-12-28 03:51:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:11,073 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 [2021-12-28 03:51:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:11,095 INFO L225 Difference]: With dead ends: 3346 [2021-12-28 03:51:11,095 INFO L226 Difference]: Without dead ends: 2213 [2021-12-28 03:51:11,106 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 [2021-12-28 03:51:11,109 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 [2021-12-28 03:51:11,110 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] [2021-12-28 03:51:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2021-12-28 03:51:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2209. [2021-12-28 03:51:11,288 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) [2021-12-28 03:51:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3028 transitions. [2021-12-28 03:51:11,306 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3028 transitions. Word has length 16 [2021-12-28 03:51:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:11,307 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3028 transitions. [2021-12-28 03:51:11,307 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) [2021-12-28 03:51:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3028 transitions. [2021-12-28 03:51:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:51:11,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:11,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:11,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:51:11,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:11,317 INFO L85 PathProgramCache]: Analyzing trace with hash 805705890, now seen corresponding path program 1 times [2021-12-28 03:51:11,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:11,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071279835] [2021-12-28 03:51:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:11,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:11,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:11,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071279835] [2021-12-28 03:51:11,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071279835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:11,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:11,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:11,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134924682] [2021-12-28 03:51:11,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:11,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:11,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:11,454 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) [2021-12-28 03:51:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:11,540 INFO L93 Difference]: Finished difference Result 2235 states and 3060 transitions. [2021-12-28 03:51:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:11,542 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 [2021-12-28 03:51:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:11,555 INFO L225 Difference]: With dead ends: 2235 [2021-12-28 03:51:11,555 INFO L226 Difference]: Without dead ends: 2222 [2021-12-28 03:51:11,559 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 [2021-12-28 03:51:11,561 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 [2021-12-28 03:51:11,561 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] [2021-12-28 03:51:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-12-28 03:51:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2209. [2021-12-28 03:51:11,645 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) [2021-12-28 03:51:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3027 transitions. [2021-12-28 03:51:11,662 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3027 transitions. Word has length 19 [2021-12-28 03:51:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:11,662 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3027 transitions. [2021-12-28 03:51:11,662 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) [2021-12-28 03:51:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3027 transitions. [2021-12-28 03:51:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:51:11,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:11,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:11,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:51:11,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash 862964192, now seen corresponding path program 1 times [2021-12-28 03:51:11,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:11,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206549613] [2021-12-28 03:51:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:11,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:11,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206549613] [2021-12-28 03:51:11,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206549613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:11,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:11,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:11,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838201845] [2021-12-28 03:51:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:11,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:11,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:11,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:11,760 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) [2021-12-28 03:51:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:11,864 INFO L93 Difference]: Finished difference Result 2211 states and 3028 transitions. [2021-12-28 03:51:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:11,865 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 [2021-12-28 03:51:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:11,874 INFO L225 Difference]: With dead ends: 2211 [2021-12-28 03:51:11,874 INFO L226 Difference]: Without dead ends: 2208 [2021-12-28 03:51:11,879 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 [2021-12-28 03:51:11,880 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 [2021-12-28 03:51:11,881 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] [2021-12-28 03:51:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-12-28 03:51:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2208. [2021-12-28 03:51:11,950 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) [2021-12-28 03:51:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3025 transitions. [2021-12-28 03:51:11,962 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3025 transitions. Word has length 19 [2021-12-28 03:51:11,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:11,963 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 3025 transitions. [2021-12-28 03:51:11,964 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) [2021-12-28 03:51:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3025 transitions. [2021-12-28 03:51:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 03:51:11,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:11,965 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] [2021-12-28 03:51:11,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:51:11,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash 981610294, now seen corresponding path program 1 times [2021-12-28 03:51:11,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:11,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877178796] [2021-12-28 03:51:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:11,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:12,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:12,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877178796] [2021-12-28 03:51:12,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877178796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:12,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:12,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:12,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662527] [2021-12-28 03:51:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:12,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:12,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:12,073 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) [2021-12-28 03:51:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:12,146 INFO L93 Difference]: Finished difference Result 2210 states and 3026 transitions. [2021-12-28 03:51:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:12,146 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 [2021-12-28 03:51:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:12,156 INFO L225 Difference]: With dead ends: 2210 [2021-12-28 03:51:12,156 INFO L226 Difference]: Without dead ends: 2207 [2021-12-28 03:51:12,157 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 [2021-12-28 03:51:12,163 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 [2021-12-28 03:51:12,164 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] [2021-12-28 03:51:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-12-28 03:51:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-12-28 03:51:12,232 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) [2021-12-28 03:51:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3023 transitions. [2021-12-28 03:51:12,252 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3023 transitions. Word has length 20 [2021-12-28 03:51:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:12,253 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3023 transitions. [2021-12-28 03:51:12,253 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) [2021-12-28 03:51:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3023 transitions. [2021-12-28 03:51:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-28 03:51:12,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:12,257 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] [2021-12-28 03:51:12,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:51:12,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:12,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash 364677027, now seen corresponding path program 1 times [2021-12-28 03:51:12,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:12,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057083227] [2021-12-28 03:51:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:12,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:12,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057083227] [2021-12-28 03:51:12,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057083227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:12,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:12,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:12,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329725613] [2021-12-28 03:51:12,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:12,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:12,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:12,370 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) [2021-12-28 03:51:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:12,534 INFO L93 Difference]: Finished difference Result 6579 states and 9160 transitions. [2021-12-28 03:51:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:12,535 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 [2021-12-28 03:51:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:12,597 INFO L225 Difference]: With dead ends: 6579 [2021-12-28 03:51:12,597 INFO L226 Difference]: Without dead ends: 4375 [2021-12-28 03:51:12,604 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 [2021-12-28 03:51:12,605 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 [2021-12-28 03:51:12,606 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] [2021-12-28 03:51:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-12-28 03:51:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 4369. [2021-12-28 03:51:12,741 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) [2021-12-28 03:51:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6064 transitions. [2021-12-28 03:51:12,762 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6064 transitions. Word has length 21 [2021-12-28 03:51:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:12,762 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 6064 transitions. [2021-12-28 03:51:12,763 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) [2021-12-28 03:51:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6064 transitions. [2021-12-28 03:51:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 03:51:12,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:12,764 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] [2021-12-28 03:51:12,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:51:12,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1580380199, now seen corresponding path program 1 times [2021-12-28 03:51:12,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:12,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780929976] [2021-12-28 03:51:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:12,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:12,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:12,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780929976] [2021-12-28 03:51:12,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780929976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:12,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:12,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:12,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692138759] [2021-12-28 03:51:12,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:12,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:12,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:12,838 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) [2021-12-28 03:51:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:12,944 INFO L93 Difference]: Finished difference Result 4371 states and 6065 transitions. [2021-12-28 03:51:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:12,944 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 [2021-12-28 03:51:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:12,969 INFO L225 Difference]: With dead ends: 4371 [2021-12-28 03:51:12,970 INFO L226 Difference]: Without dead ends: 4368 [2021-12-28 03:51:12,972 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 [2021-12-28 03:51:12,973 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 [2021-12-28 03:51:12,974 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] [2021-12-28 03:51:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2021-12-28 03:51:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4368. [2021-12-28 03:51:13,146 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) [2021-12-28 03:51:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 6062 transitions. [2021-12-28 03:51:13,165 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 6062 transitions. Word has length 22 [2021-12-28 03:51:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:13,165 INFO L470 AbstractCegarLoop]: Abstraction has 4368 states and 6062 transitions. [2021-12-28 03:51:13,165 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) [2021-12-28 03:51:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 6062 transitions. [2021-12-28 03:51:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:51:13,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:13,167 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] [2021-12-28 03:51:13,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:51:13,167 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1747607194, now seen corresponding path program 1 times [2021-12-28 03:51:13,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:13,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648590105] [2021-12-28 03:51:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:13,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:13,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:13,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648590105] [2021-12-28 03:51:13,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648590105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:13,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:13,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:13,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568744837] [2021-12-28 03:51:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:13,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:13,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:13,245 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) [2021-12-28 03:51:13,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:13,374 INFO L93 Difference]: Finished difference Result 4370 states and 6063 transitions. [2021-12-28 03:51:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:13,377 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 [2021-12-28 03:51:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:13,398 INFO L225 Difference]: With dead ends: 4370 [2021-12-28 03:51:13,398 INFO L226 Difference]: Without dead ends: 4358 [2021-12-28 03:51:13,401 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 [2021-12-28 03:51:13,402 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 [2021-12-28 03:51:13,402 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] [2021-12-28 03:51:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2021-12-28 03:51:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 4358. [2021-12-28 03:51:13,539 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) [2021-12-28 03:51:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6049 transitions. [2021-12-28 03:51:13,564 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6049 transitions. Word has length 23 [2021-12-28 03:51:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:13,565 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 6049 transitions. [2021-12-28 03:51:13,565 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) [2021-12-28 03:51:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6049 transitions. [2021-12-28 03:51:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-28 03:51:13,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:13,570 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] [2021-12-28 03:51:13,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:51:13,571 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:13,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash 771988741, now seen corresponding path program 1 times [2021-12-28 03:51:13,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:13,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104696947] [2021-12-28 03:51:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:13,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:51:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:51:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:51:13,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:13,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104696947] [2021-12-28 03:51:13,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104696947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:13,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:13,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:51:13,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150774725] [2021-12-28 03:51:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:13,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:51:13,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:51:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:51:13,706 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) [2021-12-28 03:51:16,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:18,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:20,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:24,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:26,110 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 [] [2021-12-28 03:51:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:26,898 INFO L93 Difference]: Finished difference Result 13550 states and 18895 transitions. [2021-12-28 03:51:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:51:26,900 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 [2021-12-28 03:51:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:26,969 INFO L225 Difference]: With dead ends: 13550 [2021-12-28 03:51:26,969 INFO L226 Difference]: Without dead ends: 9195 [2021-12-28 03:51:26,992 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 [2021-12-28 03:51:26,993 INFO L933 BasicCegarLoop]: 1868 mSDtfsCounter, 1921 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 734 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 3801 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:26,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2107 Valid, 3801 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 1016 Invalid, 5 Unknown, 0 Unchecked, 12.8s Time] [2021-12-28 03:51:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9195 states. [2021-12-28 03:51:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9195 to 8964. [2021-12-28 03:51:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 6459 states have (on average 1.29973680136244) internal successors, (8395), 6597 states have internal predecessors, (8395), 1868 states have call successors, (1868), 566 states have call predecessors, (1868), 636 states have return successors, (2228), 1888 states have call predecessors, (2228), 1864 states have call successors, (2228) [2021-12-28 03:51:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 12491 transitions. [2021-12-28 03:51:27,395 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 12491 transitions. Word has length 49 [2021-12-28 03:51:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:27,396 INFO L470 AbstractCegarLoop]: Abstraction has 8964 states and 12491 transitions. [2021-12-28 03:51:27,396 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) [2021-12-28 03:51:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 12491 transitions. [2021-12-28 03:51:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 03:51:27,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:27,408 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] [2021-12-28 03:51:27,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:51:27,409 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2059784186, now seen corresponding path program 1 times [2021-12-28 03:51:27,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:27,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182570704] [2021-12-28 03:51:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:27,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:51:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:51:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:27,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:51:27,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:27,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182570704] [2021-12-28 03:51:27,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182570704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:27,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:27,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:51:27,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770860301] [2021-12-28 03:51:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:27,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:51:27,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:51:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:51:27,577 INFO L87 Difference]: Start difference. First operand 8964 states and 12491 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) [2021-12-28 03:51:29,770 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 [] [2021-12-28 03:51:33,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:35,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:36,665 INFO L93 Difference]: Finished difference Result 22702 states and 31695 transitions. [2021-12-28 03:51:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:51:36,666 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 [2021-12-28 03:51:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:36,769 INFO L225 Difference]: With dead ends: 22702 [2021-12-28 03:51:36,770 INFO L226 Difference]: Without dead ends: 13741 [2021-12-28 03:51:36,797 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 [2021-12-28 03:51:36,799 INFO L933 BasicCegarLoop]: 2797 mSDtfsCounter, 1643 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 559 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:36,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 5221 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 1071 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2021-12-28 03:51:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13741 states. [2021-12-28 03:51:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13741 to 13398. [2021-12-28 03:51:37,290 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) [2021-12-28 03:51:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13398 states to 13398 states and 18661 transitions. [2021-12-28 03:51:37,346 INFO L78 Accepts]: Start accepts. Automaton has 13398 states and 18661 transitions. Word has length 61 [2021-12-28 03:51:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:37,346 INFO L470 AbstractCegarLoop]: Abstraction has 13398 states and 18661 transitions. [2021-12-28 03:51:37,346 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) [2021-12-28 03:51:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13398 states and 18661 transitions. [2021-12-28 03:51:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 03:51:37,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:37,360 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] [2021-12-28 03:51:37,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:51:37,360 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1712225285, now seen corresponding path program 1 times [2021-12-28 03:51:37,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:37,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797444070] [2021-12-28 03:51:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:37,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:51:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-28 03:51:37,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:37,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797444070] [2021-12-28 03:51:37,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797444070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:37,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:37,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:51:37,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343982265] [2021-12-28 03:51:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:37,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:51:37,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:51:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:51:37,542 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) [2021-12-28 03:51:39,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:43,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:43,976 INFO L93 Difference]: Finished difference Result 27244 states and 38474 transitions. [2021-12-28 03:51:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:51:43,976 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 [2021-12-28 03:51:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:44,030 INFO L225 Difference]: With dead ends: 27244 [2021-12-28 03:51:44,031 INFO L226 Difference]: Without dead ends: 13849 [2021-12-28 03:51:44,075 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 [2021-12-28 03:51:44,076 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 387 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 261 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:44,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 4236 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1265 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-12-28 03:51:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13849 states. [2021-12-28 03:51:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13849 to 13434. [2021-12-28 03:51:44,606 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) [2021-12-28 03:51:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 18697 transitions. [2021-12-28 03:51:44,659 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 18697 transitions. Word has length 73 [2021-12-28 03:51:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:44,661 INFO L470 AbstractCegarLoop]: Abstraction has 13434 states and 18697 transitions. [2021-12-28 03:51:44,661 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) [2021-12-28 03:51:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 18697 transitions. [2021-12-28 03:51:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 03:51:44,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:44,674 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] [2021-12-28 03:51:44,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:51:44,675 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1032166915, now seen corresponding path program 1 times [2021-12-28 03:51:44,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:44,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398620218] [2021-12-28 03:51:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:44,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:51:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-28 03:51:44,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:44,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398620218] [2021-12-28 03:51:44,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398620218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:44,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:44,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:51:44,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397504094] [2021-12-28 03:51:44,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:44,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:51:44,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:51:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:51:44,878 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) [2021-12-28 03:51:46,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:48,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:52,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:54,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:54,964 INFO L93 Difference]: Finished difference Result 30005 states and 42659 transitions. [2021-12-28 03:51:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:51:54,966 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 [2021-12-28 03:51:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:55,026 INFO L225 Difference]: With dead ends: 30005 [2021-12-28 03:51:55,027 INFO L226 Difference]: Without dead ends: 16574 [2021-12-28 03:51:55,063 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 [2021-12-28 03:51:55,064 INFO L933 BasicCegarLoop]: 1764 mSDtfsCounter, 1997 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 641 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:55,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 3846 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 919 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2021-12-28 03:51:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16574 states. [2021-12-28 03:51:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16574 to 13406. [2021-12-28 03:51:55,645 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) [2021-12-28 03:51:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 18641 transitions. [2021-12-28 03:51:55,696 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 18641 transitions. Word has length 73 [2021-12-28 03:51:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:55,696 INFO L470 AbstractCegarLoop]: Abstraction has 13406 states and 18641 transitions. [2021-12-28 03:51:55,697 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) [2021-12-28 03:51:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 18641 transitions. [2021-12-28 03:51:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 03:51:55,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:55,720 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] [2021-12-28 03:51:55,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:51:55,721 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 734894962, now seen corresponding path program 1 times [2021-12-28 03:51:55,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:55,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266912365] [2021-12-28 03:51:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:55,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:51:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:51:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:51:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:51:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:51:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:51:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:51:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:51:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 03:51:55,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266912365] [2021-12-28 03:51:55,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266912365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:55,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:55,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:51:55,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107755002] [2021-12-28 03:51:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:55,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:51:55,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:51:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:51:55,910 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) [2021-12-28 03:51:58,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:52:02,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []