/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:44:24,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:44:24,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:44:24,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:44:24,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:44:24,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:44:24,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:44:24,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:44:24,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:44:24,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:44:24,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:44:24,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:44:24,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:44:24,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:44:24,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:44:24,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:44:24,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:44:24,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:44:24,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:44:24,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:44:24,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:44:24,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:44:24,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:44:24,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:44:24,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:44:24,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:44:24,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:44:24,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:44:24,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:44:24,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:44:24,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:44:24,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:44:24,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:44:24,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:44:24,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:44:24,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:44:24,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:44:24,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:44:24,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:44:24,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:44:24,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:44:24,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:44:24,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:44:24,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:44:24,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:44:24,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:44:24,425 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:44:24,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:44:24,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:44:24,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:44:24,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:44:24,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:44:24,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:44:24,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:44:24,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:44:24,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:44:24,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:44:24,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:44:24,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:44:24,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:44:24,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:44:24,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:44:24,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:44:24,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:44:24,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:44:24,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:44:24,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:44:24,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:44:24,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:44:24,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:44:24,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:44:24,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:44:24,892 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:44:24,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2020-12-22 14:44:25,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c928b48b0/cdb8092143b24c1d930ba8e157521ce1/FLAG490bb9181 [2020-12-22 14:44:26,119 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:44:26,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2020-12-22 14:44:26,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c928b48b0/cdb8092143b24c1d930ba8e157521ce1/FLAG490bb9181 [2020-12-22 14:44:26,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c928b48b0/cdb8092143b24c1d930ba8e157521ce1 [2020-12-22 14:44:26,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:44:26,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:44:26,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:44:26,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:44:26,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:44:26,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:44:26" (1/1) ... [2020-12-22 14:44:26,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b60d148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:26, skipping insertion in model container [2020-12-22 14:44:26,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:44:26" (1/1) ... [2020-12-22 14:44:26,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:44:26,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:44:29,162 WARN L226 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2020-12-22 14:44:29,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:44:29,528 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:44:30,078 WARN L226 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2020-12-22 14:44:30,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:44:30,654 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:44:30,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30 WrapperNode [2020-12-22 14:44:30,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:44:30,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:44:30,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:44:30,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:44:30,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:30,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:31,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:44:31,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:44:31,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:44:31,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:44:31,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:31,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:32,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:32,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:33,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:33,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:33,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... [2020-12-22 14:44:34,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:44:34,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:44:34,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:44:34,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:44:34,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:44:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2020-12-22 14:44:34,339 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2020-12-22 14:44:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:44:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:44:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2020-12-22 14:44:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2020-12-22 14:44:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:44:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 14:44:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:44:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 14:44:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:44:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:44:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:44:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:44:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:44:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2020-12-22 14:44:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2020-12-22 14:44:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:44:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2020-12-22 14:44:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2020-12-22 14:44:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2020-12-22 14:44:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2020-12-22 14:44:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:44:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:44:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 14:44:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 14:44:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2020-12-22 14:44:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2020-12-22 14:44:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:44:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:44:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:45:19,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:45:19,263 INFO L299 CfgBuilder]: Removed 4922 assume(true) statements. [2020-12-22 14:45:19,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:45:19 BoogieIcfgContainer [2020-12-22 14:45:19,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:45:19,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:45:19,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:45:19,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:45:19,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:44:26" (1/3) ... [2020-12-22 14:45:19,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66de47b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:45:19, skipping insertion in model container [2020-12-22 14:45:19,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:44:30" (2/3) ... [2020-12-22 14:45:19,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66de47b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:45:19, skipping insertion in model container [2020-12-22 14:45:19,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:45:19" (3/3) ... [2020-12-22 14:45:19,281 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2020-12-22 14:45:19,288 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:45:19,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 14:45:19,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 14:45:19,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:45:19,360 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:45:19,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:45:19,360 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:45:19,360 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:45:19,360 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:45:19,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:45:19,361 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:45:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4558 states. [2020-12-22 14:45:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 14:45:19,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:19,490 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:19,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:19,499 INFO L82 PathProgramCache]: Analyzing trace with hash -83818068, now seen corresponding path program 1 times [2020-12-22 14:45:19,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:19,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86057713] [2020-12-22 14:45:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:20,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86057713] [2020-12-22 14:45:20,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:20,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:45:20,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319317188] [2020-12-22 14:45:20,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:45:20,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:20,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:45:20,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:45:20,421 INFO L87 Difference]: Start difference. First operand 4558 states. Second operand 2 states. [2020-12-22 14:45:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:20,790 INFO L93 Difference]: Finished difference Result 9112 states and 12281 transitions. [2020-12-22 14:45:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:45:20,791 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 114 [2020-12-22 14:45:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:20,846 INFO L225 Difference]: With dead ends: 9112 [2020-12-22 14:45:20,846 INFO L226 Difference]: Without dead ends: 4452 [2020-12-22 14:45:20,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:45:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2020-12-22 14:45:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4452. [2020-12-22 14:45:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4452 states. [2020-12-22 14:45:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 5878 transitions. [2020-12-22 14:45:21,151 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 5878 transitions. Word has length 114 [2020-12-22 14:45:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:21,152 INFO L481 AbstractCegarLoop]: Abstraction has 4452 states and 5878 transitions. [2020-12-22 14:45:21,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:45:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 5878 transitions. [2020-12-22 14:45:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 14:45:21,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:21,161 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:21,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:45:21,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 978521536, now seen corresponding path program 1 times [2020-12-22 14:45:21,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:21,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224799948] [2020-12-22 14:45:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:21,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224799948] [2020-12-22 14:45:21,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:21,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:45:21,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156349186] [2020-12-22 14:45:21,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:45:21,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:21,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:45:21,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:21,728 INFO L87 Difference]: Start difference. First operand 4452 states and 5878 transitions. Second operand 3 states. [2020-12-22 14:45:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:24,369 INFO L93 Difference]: Finished difference Result 13109 states and 17354 transitions. [2020-12-22 14:45:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:45:24,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-12-22 14:45:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:24,432 INFO L225 Difference]: With dead ends: 13109 [2020-12-22 14:45:24,432 INFO L226 Difference]: Without dead ends: 8759 [2020-12-22 14:45:24,447 INFO L677 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 [2020-12-22 14:45:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8759 states. [2020-12-22 14:45:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8759 to 8751. [2020-12-22 14:45:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8751 states. [2020-12-22 14:45:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8751 states to 8751 states and 11587 transitions. [2020-12-22 14:45:24,916 INFO L78 Accepts]: Start accepts. Automaton has 8751 states and 11587 transitions. Word has length 114 [2020-12-22 14:45:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:24,919 INFO L481 AbstractCegarLoop]: Abstraction has 8751 states and 11587 transitions. [2020-12-22 14:45:24,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:45:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8751 states and 11587 transitions. [2020-12-22 14:45:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 14:45:24,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:24,930 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:24,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:45:24,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:24,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:24,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1508744979, now seen corresponding path program 1 times [2020-12-22 14:45:24,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:24,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462420702] [2020-12-22 14:45:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:25,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462420702] [2020-12-22 14:45:25,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:25,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:45:25,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925146176] [2020-12-22 14:45:25,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:45:25,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:25,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:45:25,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:25,408 INFO L87 Difference]: Start difference. First operand 8751 states and 11587 transitions. Second operand 3 states. [2020-12-22 14:45:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:26,185 INFO L93 Difference]: Finished difference Result 25047 states and 33205 transitions. [2020-12-22 14:45:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:45:26,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 14:45:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:26,326 INFO L225 Difference]: With dead ends: 25047 [2020-12-22 14:45:26,327 INFO L226 Difference]: Without dead ends: 16398 [2020-12-22 14:45:26,360 INFO L677 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 [2020-12-22 14:45:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16398 states. [2020-12-22 14:45:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16398 to 16377. [2020-12-22 14:45:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16377 states. [2020-12-22 14:45:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16377 states to 16377 states and 21716 transitions. [2020-12-22 14:45:27,028 INFO L78 Accepts]: Start accepts. Automaton has 16377 states and 21716 transitions. Word has length 118 [2020-12-22 14:45:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:27,028 INFO L481 AbstractCegarLoop]: Abstraction has 16377 states and 21716 transitions. [2020-12-22 14:45:27,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:45:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 16377 states and 21716 transitions. [2020-12-22 14:45:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 14:45:27,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:27,034 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:27,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:45:27,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash 256624533, now seen corresponding path program 1 times [2020-12-22 14:45:27,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:27,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556644894] [2020-12-22 14:45:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:27,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556644894] [2020-12-22 14:45:27,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:27,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:45:27,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893964883] [2020-12-22 14:45:27,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:45:27,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:27,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:45:27,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:27,632 INFO L87 Difference]: Start difference. First operand 16377 states and 21716 transitions. Second operand 3 states. [2020-12-22 14:45:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:28,074 INFO L93 Difference]: Finished difference Result 16377 states and 21716 transitions. [2020-12-22 14:45:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:45:28,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-12-22 14:45:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:28,126 INFO L225 Difference]: With dead ends: 16377 [2020-12-22 14:45:28,126 INFO L226 Difference]: Without dead ends: 16375 [2020-12-22 14:45:28,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16375 states. [2020-12-22 14:45:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16375 to 16375. [2020-12-22 14:45:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16375 states. [2020-12-22 14:45:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16375 states to 16375 states and 21714 transitions. [2020-12-22 14:45:28,850 INFO L78 Accepts]: Start accepts. Automaton has 16375 states and 21714 transitions. Word has length 123 [2020-12-22 14:45:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:28,852 INFO L481 AbstractCegarLoop]: Abstraction has 16375 states and 21714 transitions. [2020-12-22 14:45:28,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:45:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 16375 states and 21714 transitions. [2020-12-22 14:45:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-22 14:45:28,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:28,856 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:28,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:45:28,857 INFO L429 AbstractCegarLoop]: === Iteration 5 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash 316695539, now seen corresponding path program 1 times [2020-12-22 14:45:28,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:28,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963396199] [2020-12-22 14:45:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:29,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963396199] [2020-12-22 14:45:29,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:29,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:45:29,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790040044] [2020-12-22 14:45:29,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:45:29,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:45:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:45:29,279 INFO L87 Difference]: Start difference. First operand 16375 states and 21714 transitions. Second operand 5 states. [2020-12-22 14:45:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:33,950 INFO L93 Difference]: Finished difference Result 47518 states and 63067 transitions. [2020-12-22 14:45:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:45:33,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-12-22 14:45:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:34,066 INFO L225 Difference]: With dead ends: 47518 [2020-12-22 14:45:34,066 INFO L226 Difference]: Without dead ends: 31245 [2020-12-22 14:45:34,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:45:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31245 states. [2020-12-22 14:45:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31245 to 31217. [2020-12-22 14:45:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31217 states. [2020-12-22 14:45:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31217 states to 31217 states and 41160 transitions. [2020-12-22 14:45:35,602 INFO L78 Accepts]: Start accepts. Automaton has 31217 states and 41160 transitions. Word has length 125 [2020-12-22 14:45:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:35,603 INFO L481 AbstractCegarLoop]: Abstraction has 31217 states and 41160 transitions. [2020-12-22 14:45:35,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:45:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31217 states and 41160 transitions. [2020-12-22 14:45:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 14:45:35,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:35,607 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:35,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:45:35,608 INFO L429 AbstractCegarLoop]: === Iteration 6 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash -634553718, now seen corresponding path program 1 times [2020-12-22 14:45:35,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:35,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125983391] [2020-12-22 14:45:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:36,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125983391] [2020-12-22 14:45:36,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:36,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:45:36,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256445910] [2020-12-22 14:45:36,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:45:36,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:36,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:45:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:36,261 INFO L87 Difference]: Start difference. First operand 31217 states and 41160 transitions. Second operand 3 states. [2020-12-22 14:45:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:37,484 INFO L93 Difference]: Finished difference Result 31217 states and 41160 transitions. [2020-12-22 14:45:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:45:37,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 14:45:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:37,591 INFO L225 Difference]: With dead ends: 31217 [2020-12-22 14:45:37,592 INFO L226 Difference]: Without dead ends: 31215 [2020-12-22 14:45:37,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31215 states. [2020-12-22 14:45:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31215 to 31215. [2020-12-22 14:45:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31215 states. [2020-12-22 14:45:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31215 states to 31215 states and 41158 transitions. [2020-12-22 14:45:39,205 INFO L78 Accepts]: Start accepts. Automaton has 31215 states and 41158 transitions. Word has length 124 [2020-12-22 14:45:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:39,205 INFO L481 AbstractCegarLoop]: Abstraction has 31215 states and 41158 transitions. [2020-12-22 14:45:39,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:45:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 31215 states and 41158 transitions. [2020-12-22 14:45:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 14:45:39,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:39,209 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:39,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:45:39,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:39,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:39,210 INFO L82 PathProgramCache]: Analyzing trace with hash -45597416, now seen corresponding path program 1 times [2020-12-22 14:45:39,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:39,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854827715] [2020-12-22 14:45:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:39,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854827715] [2020-12-22 14:45:39,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:39,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:45:39,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596115811] [2020-12-22 14:45:39,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:45:39,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:39,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:45:39,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:45:39,811 INFO L87 Difference]: Start difference. First operand 31215 states and 41158 transitions. Second operand 5 states. [2020-12-22 14:45:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:46,951 INFO L93 Difference]: Finished difference Result 78192 states and 103301 transitions. [2020-12-22 14:45:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:45:46,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-12-22 14:45:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:47,123 INFO L225 Difference]: With dead ends: 78192 [2020-12-22 14:45:47,123 INFO L226 Difference]: Without dead ends: 47079 [2020-12-22 14:45:47,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:45:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47079 states. [2020-12-22 14:45:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47079 to 47049. [2020-12-22 14:45:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47049 states. [2020-12-22 14:45:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47049 states to 47049 states and 61864 transitions. [2020-12-22 14:45:49,644 INFO L78 Accepts]: Start accepts. Automaton has 47049 states and 61864 transitions. Word has length 126 [2020-12-22 14:45:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:45:49,645 INFO L481 AbstractCegarLoop]: Abstraction has 47049 states and 61864 transitions. [2020-12-22 14:45:49,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:45:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 47049 states and 61864 transitions. [2020-12-22 14:45:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-22 14:45:49,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:45:49,649 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:45:49,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:45:49,649 INFO L429 AbstractCegarLoop]: === Iteration 8 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:45:49,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:45:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1803691583, now seen corresponding path program 1 times [2020-12-22 14:45:49,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:45:49,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673784967] [2020-12-22 14:45:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:45:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:45:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:45:50,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673784967] [2020-12-22 14:45:50,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:45:50,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:45:50,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843746067] [2020-12-22 14:45:50,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:45:50,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:45:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:45:50,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:50,057 INFO L87 Difference]: Start difference. First operand 47049 states and 61864 transitions. Second operand 3 states. [2020-12-22 14:45:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:45:54,876 INFO L93 Difference]: Finished difference Result 140859 states and 187260 transitions. [2020-12-22 14:45:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:45:54,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-12-22 14:45:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:45:55,409 INFO L225 Difference]: With dead ends: 140859 [2020-12-22 14:45:55,409 INFO L226 Difference]: Without dead ends: 93912 [2020-12-22 14:45:55,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:45:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93912 states. [2020-12-22 14:45:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93912 to 93892. [2020-12-22 14:45:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93892 states. [2020-12-22 14:46:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93892 states to 93892 states and 124467 transitions. [2020-12-22 14:46:00,070 INFO L78 Accepts]: Start accepts. Automaton has 93892 states and 124467 transitions. Word has length 125 [2020-12-22 14:46:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:46:00,071 INFO L481 AbstractCegarLoop]: Abstraction has 93892 states and 124467 transitions. [2020-12-22 14:46:00,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:46:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 93892 states and 124467 transitions. [2020-12-22 14:46:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 14:46:00,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:46:00,075 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:46:00,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:46:00,075 INFO L429 AbstractCegarLoop]: === Iteration 9 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:46:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:46:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash 79884596, now seen corresponding path program 1 times [2020-12-22 14:46:00,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:46:00,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542873202] [2020-12-22 14:46:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:46:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:46:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:46:00,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542873202] [2020-12-22 14:46:00,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:46:00,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:46:00,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666525493] [2020-12-22 14:46:00,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:46:00,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:46:00,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:46:00,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:46:00,423 INFO L87 Difference]: Start difference. First operand 93892 states and 124467 transitions. Second operand 3 states. [2020-12-22 14:46:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:46:03,733 INFO L93 Difference]: Finished difference Result 93892 states and 124467 transitions. [2020-12-22 14:46:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:46:03,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-12-22 14:46:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:46:03,961 INFO L225 Difference]: With dead ends: 93892 [2020-12-22 14:46:03,961 INFO L226 Difference]: Without dead ends: 93890 [2020-12-22 14:46:03,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:46:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93890 states. [2020-12-22 14:46:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93890 to 93890. [2020-12-22 14:46:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93890 states. [2020-12-22 14:46:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93890 states to 93890 states and 124465 transitions. [2020-12-22 14:46:08,405 INFO L78 Accepts]: Start accepts. Automaton has 93890 states and 124465 transitions. Word has length 126 [2020-12-22 14:46:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:46:08,407 INFO L481 AbstractCegarLoop]: Abstraction has 93890 states and 124465 transitions. [2020-12-22 14:46:08,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:46:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 93890 states and 124465 transitions. [2020-12-22 14:46:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 14:46:08,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:46:08,426 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:46:08,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:46:08,426 INFO L429 AbstractCegarLoop]: === Iteration 10 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:46:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:46:08,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1818524439, now seen corresponding path program 1 times [2020-12-22 14:46:08,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:46:08,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432713333] [2020-12-22 14:46:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:46:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:46:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:46:08,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432713333] [2020-12-22 14:46:08,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:46:08,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:46:08,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98837776] [2020-12-22 14:46:08,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:46:08,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:46:08,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:46:08,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:46:08,773 INFO L87 Difference]: Start difference. First operand 93890 states and 124465 transitions. Second operand 3 states. [2020-12-22 14:46:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:46:11,804 INFO L93 Difference]: Finished difference Result 93890 states and 124465 transitions. [2020-12-22 14:46:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:46:11,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 14:46:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:46:12,041 INFO L225 Difference]: With dead ends: 93890 [2020-12-22 14:46:12,042 INFO L226 Difference]: Without dead ends: 93881 [2020-12-22 14:46:12,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:46:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93881 states. [2020-12-22 14:46:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93881 to 93881. [2020-12-22 14:46:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93881 states. [2020-12-22 14:46:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93881 states to 93881 states and 124441 transitions. [2020-12-22 14:46:16,158 INFO L78 Accepts]: Start accepts. Automaton has 93881 states and 124441 transitions. Word has length 127 [2020-12-22 14:46:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:46:16,159 INFO L481 AbstractCegarLoop]: Abstraction has 93881 states and 124441 transitions. [2020-12-22 14:46:16,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:46:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 93881 states and 124441 transitions. [2020-12-22 14:46:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 14:46:16,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:46:16,165 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:46:16,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:46:16,165 INFO L429 AbstractCegarLoop]: === Iteration 11 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:46:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:46:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 987087216, now seen corresponding path program 1 times [2020-12-22 14:46:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:46:16,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697183143] [2020-12-22 14:46:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:46:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:46:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:46:16,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697183143] [2020-12-22 14:46:16,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:46:16,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:46:16,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893165206] [2020-12-22 14:46:16,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:46:16,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:46:16,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:46:16,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:46:16,484 INFO L87 Difference]: Start difference. First operand 93881 states and 124441 transitions. Second operand 5 states. [2020-12-22 14:46:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:46:24,780 INFO L93 Difference]: Finished difference Result 219724 states and 293062 transitions. [2020-12-22 14:46:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:46:24,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 14:46:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:46:25,214 INFO L225 Difference]: With dead ends: 219724 [2020-12-22 14:46:25,214 INFO L226 Difference]: Without dead ends: 125945 [2020-12-22 14:46:25,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:46:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125945 states. [2020-12-22 14:46:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125945 to 125903. [2020-12-22 14:46:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125903 states. [2020-12-22 14:46:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125903 states to 125903 states and 167318 transitions. [2020-12-22 14:46:31,278 INFO L78 Accepts]: Start accepts. Automaton has 125903 states and 167318 transitions. Word has length 138 [2020-12-22 14:46:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:46:31,278 INFO L481 AbstractCegarLoop]: Abstraction has 125903 states and 167318 transitions. [2020-12-22 14:46:31,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:46:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 125903 states and 167318 transitions. [2020-12-22 14:46:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 14:46:31,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:46:31,284 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:46:31,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:46:31,285 INFO L429 AbstractCegarLoop]: === Iteration 12 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:46:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:46:31,285 INFO L82 PathProgramCache]: Analyzing trace with hash -931987637, now seen corresponding path program 1 times [2020-12-22 14:46:31,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:46:31,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326877790] [2020-12-22 14:46:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:46:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:46:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:46:31,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326877790] [2020-12-22 14:46:31,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:46:31,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:46:31,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714102120] [2020-12-22 14:46:31,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:46:31,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:46:31,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:46:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:46:31,588 INFO L87 Difference]: Start difference. First operand 125903 states and 167318 transitions. Second operand 5 states. [2020-12-22 14:46:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:46:41,476 INFO L93 Difference]: Finished difference Result 284160 states and 380120 transitions. [2020-12-22 14:46:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:46:41,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-12-22 14:46:41,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:46:42,119 INFO L225 Difference]: With dead ends: 284160 [2020-12-22 14:46:42,124 INFO L226 Difference]: Without dead ends: 158359 [2020-12-22 14:46:42,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:46:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158359 states. [2020-12-22 14:46:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158359 to 158309. [2020-12-22 14:46:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158309 states. [2020-12-22 14:46:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158309 states to 158309 states and 211195 transitions. [2020-12-22 14:46:49,752 INFO L78 Accepts]: Start accepts. Automaton has 158309 states and 211195 transitions. Word has length 139 [2020-12-22 14:46:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:46:49,752 INFO L481 AbstractCegarLoop]: Abstraction has 158309 states and 211195 transitions. [2020-12-22 14:46:49,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:46:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 158309 states and 211195 transitions. [2020-12-22 14:46:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 14:46:49,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:46:49,765 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:46:49,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:46:49,765 INFO L429 AbstractCegarLoop]: === Iteration 13 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:46:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:46:49,766 INFO L82 PathProgramCache]: Analyzing trace with hash 938069947, now seen corresponding path program 1 times [2020-12-22 14:46:49,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:46:49,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785029853] [2020-12-22 14:46:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:46:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:46:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:46:50,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785029853] [2020-12-22 14:46:50,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:46:50,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:46:50,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588779987] [2020-12-22 14:46:50,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:46:50,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:46:50,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:46:50,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:46:50,101 INFO L87 Difference]: Start difference. First operand 158309 states and 211195 transitions. Second operand 4 states. [2020-12-22 14:46:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:46:59,242 INFO L93 Difference]: Finished difference Result 331379 states and 446714 transitions. [2020-12-22 14:46:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:46:59,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 14:46:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:46:59,820 INFO L225 Difference]: With dead ends: 331379 [2020-12-22 14:46:59,821 INFO L226 Difference]: Without dead ends: 173172 [2020-12-22 14:47:00,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:47:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173172 states. [2020-12-22 14:47:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173172 to 158429. [2020-12-22 14:47:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158429 states. [2020-12-22 14:47:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158429 states to 158429 states and 211315 transitions. [2020-12-22 14:47:08,621 INFO L78 Accepts]: Start accepts. Automaton has 158429 states and 211315 transitions. Word has length 161 [2020-12-22 14:47:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:47:08,622 INFO L481 AbstractCegarLoop]: Abstraction has 158429 states and 211315 transitions. [2020-12-22 14:47:08,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:47:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 158429 states and 211315 transitions. [2020-12-22 14:47:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 14:47:08,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:47:08,635 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:47:08,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 14:47:08,635 INFO L429 AbstractCegarLoop]: === Iteration 14 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:47:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:47:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash 995328249, now seen corresponding path program 1 times [2020-12-22 14:47:08,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:47:08,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457929991] [2020-12-22 14:47:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:47:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:47:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:47:09,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457929991] [2020-12-22 14:47:09,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:47:09,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:47:09,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416731811] [2020-12-22 14:47:09,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:47:09,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:47:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:47:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:47:09,852 INFO L87 Difference]: Start difference. First operand 158429 states and 211315 transitions. Second operand 7 states. [2020-12-22 14:47:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:47:21,722 INFO L93 Difference]: Finished difference Result 312064 states and 416604 transitions. [2020-12-22 14:47:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:47:21,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-12-22 14:47:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:47:22,421 INFO L225 Difference]: With dead ends: 312064 [2020-12-22 14:47:22,421 INFO L226 Difference]: Without dead ends: 153737 [2020-12-22 14:47:22,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 14:47:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153737 states. [2020-12-22 14:47:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153737 to 153737. [2020-12-22 14:47:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153737 states. [2020-12-22 14:47:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153737 states to 153737 states and 201367 transitions. [2020-12-22 14:47:30,092 INFO L78 Accepts]: Start accepts. Automaton has 153737 states and 201367 transitions. Word has length 161 [2020-12-22 14:47:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:47:30,092 INFO L481 AbstractCegarLoop]: Abstraction has 153737 states and 201367 transitions. [2020-12-22 14:47:30,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:47:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 153737 states and 201367 transitions. [2020-12-22 14:47:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 14:47:30,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:47:30,120 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:47:30,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 14:47:30,121 INFO L429 AbstractCegarLoop]: === Iteration 15 === [dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:47:30,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:47:30,125 INFO L82 PathProgramCache]: Analyzing trace with hash 244404667, now seen corresponding path program 1 times [2020-12-22 14:47:30,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:47:30,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117831095] [2020-12-22 14:47:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:47:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:47:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:47:30,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117831095] [2020-12-22 14:47:30,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:47:30,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:47:30,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824155871] [2020-12-22 14:47:30,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:47:30,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:47:30,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:47:30,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:47:30,507 INFO L87 Difference]: Start difference. First operand 153737 states and 201367 transitions. Second operand 3 states.