/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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:01:01,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:01:01,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:01:01,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:01:01,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:01:01,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:01:01,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:01:01,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:01:01,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:01:01,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:01:01,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:01:01,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:01:01,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:01:01,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:01:01,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:01:01,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:01:01,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:01:01,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:01:01,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:01:01,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:01:01,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:01:01,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:01:01,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:01:01,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:01:01,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:01:01,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:01:01,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:01:01,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:01:01,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:01:01,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:01:01,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:01:01,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:01:01,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:01:01,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:01:01,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:01:01,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:01:01,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:01:01,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:01:01,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:01:01,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:01:01,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:01:01,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:01:01,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:01:01,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:01:01,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:01:01,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:01:01,747 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:01:01,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:01:01,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:01:01,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:01:01,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:01:01,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:01:01,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:01:01,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:01:01,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:01:01,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:01:01,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:01:01,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:01:01,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:01:01,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:01:01,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:01:01,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:01:01,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:01:01,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:01:01,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:01:01,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:01:01,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:01:01,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:01:02,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:01:02,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:01:02,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:01:02,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:01:02,167 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:01:02,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2020-12-22 13:01:02,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a10b6696/3377f4a77aa84b4fa155281fb59c7d92/FLAG943ed6acf [2020-12-22 13:01:03,415 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:01:03,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2020-12-22 13:01:03,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a10b6696/3377f4a77aa84b4fa155281fb59c7d92/FLAG943ed6acf [2020-12-22 13:01:03,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a10b6696/3377f4a77aa84b4fa155281fb59c7d92 [2020-12-22 13:01:03,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:01:03,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:01:03,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:01:03,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:01:03,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:01:03,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:01:03" (1/1) ... [2020-12-22 13:01:03,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4736aa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:03, skipping insertion in model container [2020-12-22 13:01:03,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:01:03" (1/1) ... [2020-12-22 13:01:03,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:01:03,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:01:05,810 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2020-12-22 13:01:05,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:01:05,963 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:01:06,463 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2020-12-22 13:01:06,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:01:06,871 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:01:06,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06 WrapperNode [2020-12-22 13:01:06,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:01:06,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:01:06,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:01:06,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:01:06,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:06,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:08,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:01:08,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:01:08,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:01:08,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:01:08,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:08,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:08,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:08,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:09,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:09,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:09,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (1/1) ... [2020-12-22 13:01:09,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:01:09,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:01:09,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:01:09,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:01:09,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (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 13:01:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2020-12-22 13:01:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2020-12-22 13:01:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:01:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:01:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2020-12-22 13:01:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2020-12-22 13:01:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:01:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:01:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:01:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:01:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:01:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:01:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:01:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:01:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2020-12-22 13:01:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2020-12-22 13:01:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:01:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2020-12-22 13:01:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2020-12-22 13:01:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2020-12-22 13:01:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2020-12-22 13:01:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:01:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:01:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:01:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:01:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2020-12-22 13:01:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2020-12-22 13:01:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:01:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:01:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:01:50,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:01:50,302 INFO L299 CfgBuilder]: Removed 4380 assume(true) statements. [2020-12-22 13:01:50,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:01:50 BoogieIcfgContainer [2020-12-22 13:01:50,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:01:50,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:01:50,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:01:50,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:01:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:01:03" (1/3) ... [2020-12-22 13:01:50,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba0cfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:01:50, skipping insertion in model container [2020-12-22 13:01:50,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:01:06" (2/3) ... [2020-12-22 13:01:50,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba0cfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:01:50, skipping insertion in model container [2020-12-22 13:01:50,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:01:50" (3/3) ... [2020-12-22 13:01:50,317 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2020-12-22 13:01:50,324 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:01:50,330 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 13:01:50,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 13:01:50,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:01:50,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:01:50,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:01:50,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:01:50,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:01:50,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:01:50,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:01:50,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:01:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states. [2020-12-22 13:01:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 13:01:50,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:01:50,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:01:50,471 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 13:01:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:01:50,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1156347363, now seen corresponding path program 1 times [2020-12-22 13:01:50,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:01:50,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26482349] [2020-12-22 13:01:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:01:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:51,209 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 13:01:51,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26482349] [2020-12-22 13:01:51,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:01:51,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:01:51,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355966456] [2020-12-22 13:01:51,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:01:51,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:01:51,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:01:51,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:01:51,234 INFO L87 Difference]: Start difference. First operand 4089 states. Second operand 3 states. [2020-12-22 13:01:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:01:53,763 INFO L93 Difference]: Finished difference Result 12236 states and 16114 transitions. [2020-12-22 13:01:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:01:53,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 13:01:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:01:53,838 INFO L225 Difference]: With dead ends: 12236 [2020-12-22 13:01:53,839 INFO L226 Difference]: Without dead ends: 7958 [2020-12-22 13:01:53,866 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 13:01:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2020-12-22 13:01:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7950. [2020-12-22 13:01:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7950 states. [2020-12-22 13:01:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 10267 transitions. [2020-12-22 13:01:54,283 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 10267 transitions. Word has length 13 [2020-12-22 13:01:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:01:54,285 INFO L481 AbstractCegarLoop]: Abstraction has 7950 states and 10267 transitions. [2020-12-22 13:01:54,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:01:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 10267 transitions. [2020-12-22 13:01:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 13:01:54,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:01:54,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:01:54,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:01:54,298 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 13:01:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:01:54,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2098330218, now seen corresponding path program 1 times [2020-12-22 13:01:54,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:01:54,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123398877] [2020-12-22 13:01:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:01:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:54,526 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 13:01:54,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123398877] [2020-12-22 13:01:54,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:01:54,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:01:54,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022777369] [2020-12-22 13:01:54,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:01:54,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:01:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:01:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:01:54,534 INFO L87 Difference]: Start difference. First operand 7950 states and 10267 transitions. Second operand 3 states. [2020-12-22 13:01:54,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:01:54,836 INFO L93 Difference]: Finished difference Result 7980 states and 10295 transitions. [2020-12-22 13:01:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:01:54,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 13:01:54,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:01:54,882 INFO L225 Difference]: With dead ends: 7980 [2020-12-22 13:01:54,883 INFO L226 Difference]: Without dead ends: 7965 [2020-12-22 13:01:54,888 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 13:01:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2020-12-22 13:01:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7950. [2020-12-22 13:01:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7950 states. [2020-12-22 13:01:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 10266 transitions. [2020-12-22 13:01:55,384 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 10266 transitions. Word has length 17 [2020-12-22 13:01:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:01:55,385 INFO L481 AbstractCegarLoop]: Abstraction has 7950 states and 10266 transitions. [2020-12-22 13:01:55,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:01:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 10266 transitions. [2020-12-22 13:01:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 13:01:55,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:01:55,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:01:55,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:01:55,390 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 13:01:55,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:01:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2098389800, now seen corresponding path program 1 times [2020-12-22 13:01:55,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:01:55,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193662578] [2020-12-22 13:01:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:01:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:55,614 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 13:01:55,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193662578] [2020-12-22 13:01:55,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:01:55,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:01:55,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676716219] [2020-12-22 13:01:55,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:01:55,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:01:55,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:01:55,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:01:55,619 INFO L87 Difference]: Start difference. First operand 7950 states and 10266 transitions. Second operand 3 states. [2020-12-22 13:01:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:01:57,981 INFO L93 Difference]: Finished difference Result 7950 states and 10266 transitions. [2020-12-22 13:01:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:01:57,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 13:01:57,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:01:58,026 INFO L225 Difference]: With dead ends: 7950 [2020-12-22 13:01:58,026 INFO L226 Difference]: Without dead ends: 7948 [2020-12-22 13:01:58,031 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 13:01:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2020-12-22 13:01:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 7948. [2020-12-22 13:01:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7948 states. [2020-12-22 13:01:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7948 states to 7948 states and 10264 transitions. [2020-12-22 13:01:58,350 INFO L78 Accepts]: Start accepts. Automaton has 7948 states and 10264 transitions. Word has length 17 [2020-12-22 13:01:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:01:58,351 INFO L481 AbstractCegarLoop]: Abstraction has 7948 states and 10264 transitions. [2020-12-22 13:01:58,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:01:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7948 states and 10264 transitions. [2020-12-22 13:01:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 13:01:58,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:01:58,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:01:58,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:01:58,353 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 13:01:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:01:58,353 INFO L82 PathProgramCache]: Analyzing trace with hash 625585268, now seen corresponding path program 1 times [2020-12-22 13:01:58,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:01:58,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056948540] [2020-12-22 13:01:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:01:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:58,529 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 13:01:58,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056948540] [2020-12-22 13:01:58,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:01:58,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:01:58,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363319627] [2020-12-22 13:01:58,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:01:58,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:01:58,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:01:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:01:58,532 INFO L87 Difference]: Start difference. First operand 7948 states and 10264 transitions. Second operand 3 states. [2020-12-22 13:02:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:01,028 INFO L93 Difference]: Finished difference Result 7948 states and 10264 transitions. [2020-12-22 13:02:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:01,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 13:02:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:01,080 INFO L225 Difference]: With dead ends: 7948 [2020-12-22 13:02:01,080 INFO L226 Difference]: Without dead ends: 7946 [2020-12-22 13:02:01,084 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 13:02:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2020-12-22 13:02:01,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7946. [2020-12-22 13:02:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7946 states. [2020-12-22 13:02:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 10262 transitions. [2020-12-22 13:02:01,519 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 10262 transitions. Word has length 18 [2020-12-22 13:02:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:01,519 INFO L481 AbstractCegarLoop]: Abstraction has 7946 states and 10262 transitions. [2020-12-22 13:02:01,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 10262 transitions. [2020-12-22 13:02:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 13:02:01,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:01,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:02:01,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:02:01,522 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 13:02:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash -965263938, now seen corresponding path program 1 times [2020-12-22 13:02:01,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:01,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407103210] [2020-12-22 13:02:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:01,690 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 13:02:01,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407103210] [2020-12-22 13:02:01,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:01,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:01,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973988153] [2020-12-22 13:02:01,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:01,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:01,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:01,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:01,694 INFO L87 Difference]: Start difference. First operand 7946 states and 10262 transitions. Second operand 3 states. [2020-12-22 13:02:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:02,426 INFO L93 Difference]: Finished difference Result 22833 states and 29483 transitions. [2020-12-22 13:02:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:02,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 13:02:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:02,470 INFO L225 Difference]: With dead ends: 22833 [2020-12-22 13:02:02,470 INFO L226 Difference]: Without dead ends: 14890 [2020-12-22 13:02:02,488 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 13:02:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14890 states. [2020-12-22 13:02:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14890 to 14873. [2020-12-22 13:02:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14873 states. [2020-12-22 13:02:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14873 states to 14873 states and 19208 transitions. [2020-12-22 13:02:03,095 INFO L78 Accepts]: Start accepts. Automaton has 14873 states and 19208 transitions. Word has length 18 [2020-12-22 13:02:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:03,096 INFO L481 AbstractCegarLoop]: Abstraction has 14873 states and 19208 transitions. [2020-12-22 13:02:03,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14873 states and 19208 transitions. [2020-12-22 13:02:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 13:02:03,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:03,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:02:03,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:02:03,098 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 13:02:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:03,099 INFO L82 PathProgramCache]: Analyzing trace with hash -2081682254, now seen corresponding path program 1 times [2020-12-22 13:02:03,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:03,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733254756] [2020-12-22 13:02:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:03,275 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 13:02:03,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733254756] [2020-12-22 13:02:03,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:03,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:03,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545199112] [2020-12-22 13:02:03,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:03,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:03,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:03,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:03,284 INFO L87 Difference]: Start difference. First operand 14873 states and 19208 transitions. Second operand 3 states. [2020-12-22 13:02:06,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:06,627 INFO L93 Difference]: Finished difference Result 44577 states and 57810 transitions. [2020-12-22 13:02:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:06,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 13:02:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:06,729 INFO L225 Difference]: With dead ends: 44577 [2020-12-22 13:02:06,729 INFO L226 Difference]: Without dead ends: 29707 [2020-12-22 13:02:06,764 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 13:02:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29707 states. [2020-12-22 13:02:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29707 to 29699. [2020-12-22 13:02:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29699 states. [2020-12-22 13:02:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29699 states to 29699 states and 38474 transitions. [2020-12-22 13:02:08,110 INFO L78 Accepts]: Start accepts. Automaton has 29699 states and 38474 transitions. Word has length 19 [2020-12-22 13:02:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:08,110 INFO L481 AbstractCegarLoop]: Abstraction has 29699 states and 38474 transitions. [2020-12-22 13:02:08,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 29699 states and 38474 transitions. [2020-12-22 13:02:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 13:02:08,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:08,112 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] [2020-12-22 13:02:08,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:02:08,113 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 13:02:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:08,113 INFO L82 PathProgramCache]: Analyzing trace with hash -107629506, now seen corresponding path program 1 times [2020-12-22 13:02:08,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:08,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570263369] [2020-12-22 13:02:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:08,245 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 13:02:08,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570263369] [2020-12-22 13:02:08,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:08,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:08,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438829774] [2020-12-22 13:02:08,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:08,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:08,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:08,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:08,248 INFO L87 Difference]: Start difference. First operand 29699 states and 38474 transitions. Second operand 3 states. [2020-12-22 13:02:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:11,337 INFO L93 Difference]: Finished difference Result 29699 states and 38474 transitions. [2020-12-22 13:02:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:11,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 13:02:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:11,422 INFO L225 Difference]: With dead ends: 29699 [2020-12-22 13:02:11,422 INFO L226 Difference]: Without dead ends: 29697 [2020-12-22 13:02:11,436 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 13:02:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29697 states. [2020-12-22 13:02:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29697 to 29697. [2020-12-22 13:02:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29697 states. [2020-12-22 13:02:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29697 states to 29697 states and 38472 transitions. [2020-12-22 13:02:12,967 INFO L78 Accepts]: Start accepts. Automaton has 29697 states and 38472 transitions. Word has length 20 [2020-12-22 13:02:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:12,967 INFO L481 AbstractCegarLoop]: Abstraction has 29697 states and 38472 transitions. [2020-12-22 13:02:12,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 29697 states and 38472 transitions. [2020-12-22 13:02:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 13:02:12,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:12,969 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] [2020-12-22 13:02:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:02:12,970 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 13:02:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:12,970 INFO L82 PathProgramCache]: Analyzing trace with hash 958463548, now seen corresponding path program 1 times [2020-12-22 13:02:12,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:12,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831605984] [2020-12-22 13:02:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:13,121 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 13:02:13,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831605984] [2020-12-22 13:02:13,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:13,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:13,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898724243] [2020-12-22 13:02:13,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:13,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:13,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:13,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:13,124 INFO L87 Difference]: Start difference. First operand 29697 states and 38472 transitions. Second operand 3 states. [2020-12-22 13:02:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:16,180 INFO L93 Difference]: Finished difference Result 29697 states and 38472 transitions. [2020-12-22 13:02:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:16,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 13:02:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:16,322 INFO L225 Difference]: With dead ends: 29697 [2020-12-22 13:02:16,322 INFO L226 Difference]: Without dead ends: 29688 [2020-12-22 13:02:16,336 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 13:02:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29688 states. [2020-12-22 13:02:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29688 to 29688. [2020-12-22 13:02:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29688 states. [2020-12-22 13:02:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29688 states to 29688 states and 38459 transitions. [2020-12-22 13:02:17,661 INFO L78 Accepts]: Start accepts. Automaton has 29688 states and 38459 transitions. Word has length 21 [2020-12-22 13:02:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:17,661 INFO L481 AbstractCegarLoop]: Abstraction has 29688 states and 38459 transitions. [2020-12-22 13:02:17,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 29688 states and 38459 transitions. [2020-12-22 13:02:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 13:02:17,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:17,670 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:02:17,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:02:17,670 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 13:02:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash 330126008, now seen corresponding path program 1 times [2020-12-22 13:02:17,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:17,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592608101] [2020-12-22 13:02:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:02:17,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592608101] [2020-12-22 13:02:17,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:17,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:17,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662357780] [2020-12-22 13:02:17,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:17,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:17,827 INFO L87 Difference]: Start difference. First operand 29688 states and 38459 transitions. Second operand 3 states. [2020-12-22 13:02:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:21,671 INFO L93 Difference]: Finished difference Result 73269 states and 94936 transitions. [2020-12-22 13:02:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:21,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 13:02:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:21,811 INFO L225 Difference]: With dead ends: 73269 [2020-12-22 13:02:21,811 INFO L226 Difference]: Without dead ends: 43584 [2020-12-22 13:02:21,896 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 13:02:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43584 states. [2020-12-22 13:02:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43584 to 43572. [2020-12-22 13:02:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43572 states. [2020-12-22 13:02:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43572 states to 43572 states and 56451 transitions. [2020-12-22 13:02:23,886 INFO L78 Accepts]: Start accepts. Automaton has 43572 states and 56451 transitions. Word has length 41 [2020-12-22 13:02:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:23,886 INFO L481 AbstractCegarLoop]: Abstraction has 43572 states and 56451 transitions. [2020-12-22 13:02:23,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 43572 states and 56451 transitions. [2020-12-22 13:02:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 13:02:23,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:23,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:02:23,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:02:23,905 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 13:02:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1971159366, now seen corresponding path program 1 times [2020-12-22 13:02:23,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659184766] [2020-12-22 13:02:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:02:24,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659184766] [2020-12-22 13:02:24,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:24,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:02:24,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409090305] [2020-12-22 13:02:24,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:02:24,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:24,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:02:24,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:02:24,104 INFO L87 Difference]: Start difference. First operand 43572 states and 56451 transitions. Second operand 4 states. [2020-12-22 13:02:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:28,294 INFO L93 Difference]: Finished difference Result 122969 states and 159335 transitions. [2020-12-22 13:02:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:02:28,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 13:02:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:28,531 INFO L225 Difference]: With dead ends: 122969 [2020-12-22 13:02:28,531 INFO L226 Difference]: Without dead ends: 79400 [2020-12-22 13:02:28,620 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 13:02:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79400 states. [2020-12-22 13:02:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79400 to 43584. [2020-12-22 13:02:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43584 states. [2020-12-22 13:02:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43584 states to 43584 states and 56463 transitions. [2020-12-22 13:02:31,688 INFO L78 Accepts]: Start accepts. Automaton has 43584 states and 56463 transitions. Word has length 53 [2020-12-22 13:02:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:31,688 INFO L481 AbstractCegarLoop]: Abstraction has 43584 states and 56463 transitions. [2020-12-22 13:02:31,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:02:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 43584 states and 56463 transitions. [2020-12-22 13:02:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 13:02:31,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:31,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:02:31,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:02:31,705 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 13:02:31,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2028417668, now seen corresponding path program 1 times [2020-12-22 13:02:31,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:31,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639717168] [2020-12-22 13:02:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:02:31,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639717168] [2020-12-22 13:02:31,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:31,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:31,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720732570] [2020-12-22 13:02:31,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:02:31,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:02:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:02:31,993 INFO L87 Difference]: Start difference. First operand 43584 states and 56463 transitions. Second operand 4 states. [2020-12-22 13:02:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:37,302 INFO L93 Difference]: Finished difference Result 119757 states and 155256 transitions. [2020-12-22 13:02:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:02:37,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 13:02:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:37,498 INFO L225 Difference]: With dead ends: 119757 [2020-12-22 13:02:37,499 INFO L226 Difference]: Without dead ends: 76176 [2020-12-22 13:02:37,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 13:02:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76176 states. [2020-12-22 13:02:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76176 to 41729. [2020-12-22 13:02:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41729 states. [2020-12-22 13:02:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41729 states to 41729 states and 54082 transitions. [2020-12-22 13:02:40,561 INFO L78 Accepts]: Start accepts. Automaton has 41729 states and 54082 transitions. Word has length 53 [2020-12-22 13:02:40,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:40,561 INFO L481 AbstractCegarLoop]: Abstraction has 41729 states and 54082 transitions. [2020-12-22 13:02:40,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:02:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand 41729 states and 54082 transitions. [2020-12-22 13:02:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 13:02:40,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:40,580 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] [2020-12-22 13:02:40,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:02:40,580 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 13:02:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1507639419, now seen corresponding path program 1 times [2020-12-22 13:02:40,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:40,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945141337] [2020-12-22 13:02:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:40,717 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 13:02:40,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945141337] [2020-12-22 13:02:40,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:40,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:40,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997553567] [2020-12-22 13:02:40,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:40,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:40,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:40,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:40,720 INFO L87 Difference]: Start difference. First operand 41729 states and 54082 transitions. Second operand 3 states. [2020-12-22 13:02:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:46,036 INFO L93 Difference]: Finished difference Result 123738 states and 160320 transitions. [2020-12-22 13:02:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:46,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 13:02:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:46,194 INFO L225 Difference]: With dead ends: 123738 [2020-12-22 13:02:46,195 INFO L226 Difference]: Without dead ends: 82012 [2020-12-22 13:02:46,298 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 13:02:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82012 states. [2020-12-22 13:02:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82012 to 81989. [2020-12-22 13:02:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81989 states. [2020-12-22 13:02:51,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81989 states to 81989 states and 106209 transitions. [2020-12-22 13:02:51,563 INFO L78 Accepts]: Start accepts. Automaton has 81989 states and 106209 transitions. Word has length 60 [2020-12-22 13:02:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:02:51,564 INFO L481 AbstractCegarLoop]: Abstraction has 81989 states and 106209 transitions. [2020-12-22 13:02:51,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:02:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 81989 states and 106209 transitions. [2020-12-22 13:02:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 13:02:51,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:02:51,606 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] [2020-12-22 13:02:51,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:02:51,606 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 13:02:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:02:51,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1494590329, now seen corresponding path program 1 times [2020-12-22 13:02:51,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:02:51,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760101630] [2020-12-22 13:02:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:02:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:02:51,734 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 13:02:51,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760101630] [2020-12-22 13:02:51,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:02:51,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:02:51,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254826996] [2020-12-22 13:02:51,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:02:51,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:02:51,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:02:51,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:02:51,737 INFO L87 Difference]: Start difference. First operand 81989 states and 106209 transitions. Second operand 3 states. [2020-12-22 13:02:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:02:57,825 INFO L93 Difference]: Finished difference Result 173437 states and 224881 transitions. [2020-12-22 13:02:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:02:57,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 13:02:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:02:58,117 INFO L225 Difference]: With dead ends: 173437 [2020-12-22 13:02:58,117 INFO L226 Difference]: Without dead ends: 91451 [2020-12-22 13:02:58,204 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 13:02:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91451 states. [2020-12-22 13:03:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91451 to 91439. [2020-12-22 13:03:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91439 states. [2020-12-22 13:03:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91439 states to 91439 states and 118642 transitions. [2020-12-22 13:03:03,683 INFO L78 Accepts]: Start accepts. Automaton has 91439 states and 118642 transitions. Word has length 66 [2020-12-22 13:03:03,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:03:03,684 INFO L481 AbstractCegarLoop]: Abstraction has 91439 states and 118642 transitions. [2020-12-22 13:03:03,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:03:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 91439 states and 118642 transitions. [2020-12-22 13:03:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 13:03:03,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:03:03,724 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:03:03,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:03:03,725 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 13:03:03,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:03:03,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1204296331, now seen corresponding path program 1 times [2020-12-22 13:03:03,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:03:03,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655845074] [2020-12-22 13:03:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:03:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:03:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:03:03,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655845074] [2020-12-22 13:03:03,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:03:03,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:03:03,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822337812] [2020-12-22 13:03:03,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:03:03,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:03:03,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:03:03,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:03:03,876 INFO L87 Difference]: Start difference. First operand 91439 states and 118642 transitions. Second operand 3 states. [2020-12-22 13:03:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:03:14,746 INFO L93 Difference]: Finished difference Result 250036 states and 324663 transitions. [2020-12-22 13:03:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:03:14,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 13:03:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:03:15,184 INFO L225 Difference]: With dead ends: 250036 [2020-12-22 13:03:15,185 INFO L226 Difference]: Without dead ends: 158600 [2020-12-22 13:03:15,314 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 13:03:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158600 states. [2020-12-22 13:03:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158600 to 91463. [2020-12-22 13:03:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91463 states. [2020-12-22 13:03:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91463 states to 91463 states and 118666 transitions. [2020-12-22 13:03:21,839 INFO L78 Accepts]: Start accepts. Automaton has 91463 states and 118666 transitions. Word has length 72 [2020-12-22 13:03:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:03:21,839 INFO L481 AbstractCegarLoop]: Abstraction has 91463 states and 118666 transitions. [2020-12-22 13:03:21,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:03:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 91463 states and 118666 transitions. [2020-12-22 13:03:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 13:03:21,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:03:21,889 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:03:21,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:03:21,889 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 13:03:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:03:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1640997375, now seen corresponding path program 1 times [2020-12-22 13:03:21,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:03:21,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879037606] [2020-12-22 13:03:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:03:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:03:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:03:22,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879037606] [2020-12-22 13:03:22,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:03:22,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:03:22,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22441222] [2020-12-22 13:03:22,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:03:22,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:03:22,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:03:22,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:03:22,428 INFO L87 Difference]: Start difference. First operand 91463 states and 118666 transitions. Second operand 5 states. [2020-12-22 13:04:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:04:13,885 INFO L93 Difference]: Finished difference Result 183259 states and 237953 transitions. [2020-12-22 13:04:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:04:13,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 13:04:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:04:14,131 INFO L225 Difference]: With dead ends: 183259 [2020-12-22 13:04:14,131 INFO L226 Difference]: Without dead ends: 91799 [2020-12-22 13:04:14,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:04:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91799 states. [2020-12-22 13:04:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91799 to 91655. [2020-12-22 13:04:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91655 states. [2020-12-22 13:04:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91655 states to 91655 states and 118906 transitions. [2020-12-22 13:04:20,586 INFO L78 Accepts]: Start accepts. Automaton has 91655 states and 118906 transitions. Word has length 78 [2020-12-22 13:04:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:04:20,587 INFO L481 AbstractCegarLoop]: Abstraction has 91655 states and 118906 transitions. [2020-12-22 13:04:20,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:04:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 91655 states and 118906 transitions. [2020-12-22 13:04:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 13:04:20,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:04:20,622 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:04:20,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:04:20,623 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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 13:04:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:04:20,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1994085757, now seen corresponding path program 1 times [2020-12-22 13:04:20,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:04:20,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982359605] [2020-12-22 13:04:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:04:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:04:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:04:20,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982359605] [2020-12-22 13:04:20,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:04:20,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:04:20,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433968398] [2020-12-22 13:04:20,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:04:20,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:04:20,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:04:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:04:20,874 INFO L87 Difference]: Start difference. First operand 91655 states and 118906 transitions. Second operand 4 states. [2020-12-22 13:04:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:04:28,304 INFO L93 Difference]: Finished difference Result 196360 states and 255187 transitions. [2020-12-22 13:04:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:04:28,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 13:04:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:04:28,534 INFO L225 Difference]: With dead ends: 196360 [2020-12-22 13:04:28,534 INFO L226 Difference]: Without dead ends: 104708 [2020-12-22 13:04:28,646 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 13:04:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104708 states. [2020-12-22 13:04:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104708 to 91763. [2020-12-22 13:04:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91763 states. [2020-12-22 13:04:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91763 states to 91763 states and 119014 transitions. [2020-12-22 13:04:34,890 INFO L78 Accepts]: Start accepts. Automaton has 91763 states and 119014 transitions. Word has length 78 [2020-12-22 13:04:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:04:34,891 INFO L481 AbstractCegarLoop]: Abstraction has 91763 states and 119014 transitions. [2020-12-22 13:04:34,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:04:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 91763 states and 119014 transitions. [2020-12-22 13:04:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 13:04:34,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:04:34,923 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:04:34,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 13:04:34,923 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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 13:04:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:04:34,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1934056892, now seen corresponding path program 1 times [2020-12-22 13:04:34,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:04:34,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339407805] [2020-12-22 13:04:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:04:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:04:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:04:35,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339407805] [2020-12-22 13:04:35,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:04:35,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:04:35,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875299753] [2020-12-22 13:04:35,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:04:35,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:04:35,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:04:35,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:04:35,585 INFO L87 Difference]: Start difference. First operand 91763 states and 119014 transitions. Second operand 7 states.