./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:12:47,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:12:47,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:12:47,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:12:47,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:12:47,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:12:47,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:12:47,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:12:47,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:12:47,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:12:47,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:12:47,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:12:47,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:12:47,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:12:47,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:12:47,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:12:47,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:12:47,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:12:47,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:12:47,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:12:47,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:12:47,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:12:47,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:12:47,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:12:47,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:12:47,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:12:47,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:12:47,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:12:47,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:12:47,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:12:47,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:12:47,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:12:47,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:12:47,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:12:47,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:12:47,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:12:47,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:12:47,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:12:47,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:12:47,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:12:47,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:12:47,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:12:47,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:12:47,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:12:47,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:12:47,661 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:12:47,661 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:12:47,662 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:12:47,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:12:47,662 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:12:47,662 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:12:47,663 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:12:47,663 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:12:47,663 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:12:47,663 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:12:47,664 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:12:47,664 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:12:47,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:12:47,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:12:47,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:12:47,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:12:47,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:12:47,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:12:47,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:12:47,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:12:47,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:12:47,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:12:47,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:12:47,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:12:47,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:12:47,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:12:47,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:12:47,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:12:47,669 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:12:47,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:12:47,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:12:47,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:12:47,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:12:47,670 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 [2021-11-07 02:12:47,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:12:47,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:12:47,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:12:47,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:12:47,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:12:47,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2021-11-07 02:12:48,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/a56e381bc/029bb1eb931c4cd2b7258ed20bc290d6/FLAGd7a569477 [2021-11-07 02:12:48,964 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:12:48,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2021-11-07 02:12:49,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/a56e381bc/029bb1eb931c4cd2b7258ed20bc290d6/FLAGd7a569477 [2021-11-07 02:12:49,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/a56e381bc/029bb1eb931c4cd2b7258ed20bc290d6 [2021-11-07 02:12:49,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:12:49,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:12:49,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:49,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:12:49,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:12:49,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:49" (1/1) ... [2021-11-07 02:12:49,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da652f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:49, skipping insertion in model container [2021-11-07 02:12:49,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:49" (1/1) ... [2021-11-07 02:12:49,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:12:49,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:12:50,996 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:50,996 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,053 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,087 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,148 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,168 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,174 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,186 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,196 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,213 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,222 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,224 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,229 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,231 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,236 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,257 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,264 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,281 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,291 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,308 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,349 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,350 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,356 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,356 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,363 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,363 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,370 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,371 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,377 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,378 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,386 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,387 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,394 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,395 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,431 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,433 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,450 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,487 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,504 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,519 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,558 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,559 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,579 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,600 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,606 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,608 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,609 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,609 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,610 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:12:51,644 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2021-11-07 02:12:51,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:51,923 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:12:51,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@123a91a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:51, skipping insertion in model container [2021-11-07 02:12:51,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:51,925 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:12:51,927 INFO L168 Benchmark]: Toolchain (without parser) took 2517.14 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 48.1 MB in the beginning and 55.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:51,928 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 21.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:12:51,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2514.01 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 48.1 MB in the beginning and 55.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:51,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 21.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2514.01 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 48.1 MB in the beginning and 55.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4581]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:12:54,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:12:54,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:12:54,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:12:54,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:12:54,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:12:54,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:12:54,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:12:54,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:12:54,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:12:54,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:12:54,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:12:54,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:12:54,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:12:54,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:12:54,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:12:54,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:12:54,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:12:54,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:12:54,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:12:54,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:12:54,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:12:54,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:12:54,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:12:54,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:12:54,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:12:54,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:12:54,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:12:54,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:12:54,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:12:54,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:12:54,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:12:54,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:12:54,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:12:54,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:12:54,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:12:54,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:12:54,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:12:54,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:12:54,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:12:54,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:12:54,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:12:54,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:12:54,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:12:54,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:12:54,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:12:54,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:12:54,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:12:54,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:12:54,457 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:12:54,458 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:12:54,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:12:54,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:12:54,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:12:54,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:12:54,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:12:54,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:12:54,462 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:12:54,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:12:54,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:12:54,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:12:54,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:12:54,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:12:54,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:12:54,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:12:54,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:12:54,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:12:54,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:12:54,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:12:54,465 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:12:54,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:12:54,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:12:54,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:12:54,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:12:54,466 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 [2021-11-07 02:12:54,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:12:54,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:12:54,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:12:54,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:12:54,906 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:12:54,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2021-11-07 02:12:54,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/88632d321/627586c4ed0c4a8195d210a254361075/FLAG9ef0ea233 [2021-11-07 02:12:55,892 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:12:55,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2021-11-07 02:12:55,950 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/88632d321/627586c4ed0c4a8195d210a254361075/FLAG9ef0ea233 [2021-11-07 02:12:56,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/data/88632d321/627586c4ed0c4a8195d210a254361075 [2021-11-07 02:12:56,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:12:56,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:12:56,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:56,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:12:56,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:12:56,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:56" (1/1) ... [2021-11-07 02:12:56,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3814e922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:56, skipping insertion in model container [2021-11-07 02:12:56,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:56" (1/1) ... [2021-11-07 02:12:56,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:12:56,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:12:58,636 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2021-11-07 02:12:58,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:58,920 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:12:58,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:12:59,319 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2021-11-07 02:12:59,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:59,359 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:12:59,668 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2021-11-07 02:12:59,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:59,892 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:12:59,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59 WrapperNode [2021-11-07 02:12:59,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:59,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:12:59,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:12:59,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:12:59,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:00,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:01,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:13:01,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:13:01,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:13:01,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:13:01,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:01,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:01,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:01,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:02,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:02,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:02,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:02,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:13:02,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:13:02,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:13:02,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:13:02,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (1/1) ... [2021-11-07 02:13:02,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:13:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:13:02,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:13:02,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:13:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:13:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 02:13:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 02:13:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:13:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:13:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:13:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:13:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:13:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-11-07 02:13:02,703 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:13:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-11-07 02:13:02,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-11-07 02:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-11-07 02:13:02,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-11-07 02:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:13:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 02:13:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 02:13:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:13:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:13:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:13:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:13:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:13:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:13:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:13:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-11-07 02:13:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-11-07 02:13:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:13:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:13:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:17:57,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:17:57,668 INFO L299 CfgBuilder]: Removed 4922 assume(true) statements. [2021-11-07 02:17:57,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:57 BoogieIcfgContainer [2021-11-07 02:17:57,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:17:57,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:17:57,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:17:57,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:17:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:12:56" (1/3) ... [2021-11-07 02:17:57,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293f1ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:57, skipping insertion in model container [2021-11-07 02:17:57,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:59" (2/3) ... [2021-11-07 02:17:57,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293f1ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:57, skipping insertion in model container [2021-11-07 02:17:57,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:57" (3/3) ... [2021-11-07 02:17:57,684 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2021-11-07 02:17:57,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:17:57,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 02:17:57,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:17:57,765 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:17:57,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 02:17:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 4558 states, 4519 states have (on average 1.3472007081212658) internal successors, (6088), 4531 states have internal predecessors, (6088), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 02:17:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 02:17:57,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:57,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:57,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:17:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1889391060, now seen corresponding path program 1 times [2021-11-07 02:17:57,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:57,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809830367] [2021-11-07 02:17:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:57,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:57,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:57,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:57,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:17:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:00,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:18:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:00,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:01,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:01,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809830367] [2021-11-07 02:18:01,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809830367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:01,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:01,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:18:01,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192416898] [2021-11-07 02:18:01,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:18:01,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:18:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:18:01,732 INFO L87 Difference]: Start difference. First operand has 4558 states, 4519 states have (on average 1.3472007081212658) internal successors, (6088), 4531 states have internal predecessors, (6088), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:01,985 INFO L93 Difference]: Finished difference Result 9112 states and 12281 transitions. [2021-11-07 02:18:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:18:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 02:18:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:02,025 INFO L225 Difference]: With dead ends: 9112 [2021-11-07 02:18:02,025 INFO L226 Difference]: Without dead ends: 4452 [2021-11-07 02:18:02,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:18:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2021-11-07 02:18:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4452. [2021-11-07 02:18:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4414 states have (on average 1.321703670140462) internal successors, (5834), 4425 states have internal predecessors, (5834), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 02:18:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 5878 transitions. [2021-11-07 02:18:02,261 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 5878 transitions. Word has length 114 [2021-11-07 02:18:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:02,262 INFO L470 AbstractCegarLoop]: Abstraction has 4452 states and 5878 transitions. [2021-11-07 02:18:02,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 5878 transitions. [2021-11-07 02:18:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 02:18:02,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:02,267 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:02,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:02,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:02,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:18:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1469863360, now seen corresponding path program 1 times [2021-11-07 02:18:02,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:02,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497406918] [2021-11-07 02:18:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:02,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:02,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:02,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:18:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:04,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:18:04,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:05,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:05,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:05,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497406918] [2021-11-07 02:18:05,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497406918] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:05,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:05,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:18:05,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212776636] [2021-11-07 02:18:05,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:05,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:05,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:05,980 INFO L87 Difference]: Start difference. First operand 4452 states and 5878 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:32,166 INFO L93 Difference]: Finished difference Result 8878 states and 11755 transitions. [2021-11-07 02:18:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:18:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 02:18:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:32,201 INFO L225 Difference]: With dead ends: 8878 [2021-11-07 02:18:32,202 INFO L226 Difference]: Without dead ends: 4478 [2021-11-07 02:18:32,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2021-11-07 02:18:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 4478. [2021-11-07 02:18:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4440 states have (on average 1.3198198198198199) internal successors, (5860), 4451 states have internal predecessors, (5860), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 02:18:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 5904 transitions. [2021-11-07 02:18:32,360 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 5904 transitions. Word has length 114 [2021-11-07 02:18:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:32,360 INFO L470 AbstractCegarLoop]: Abstraction has 4478 states and 5904 transitions. [2021-11-07 02:18:32,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 5904 transitions. [2021-11-07 02:18:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 02:18:32,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:32,364 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:32,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:32,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:32,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:18:32,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1043464553, now seen corresponding path program 1 times [2021-11-07 02:18:32,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:32,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460588525] [2021-11-07 02:18:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:32,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:32,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:32,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:18:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:34,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:18:34,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:18:35,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:18:37,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:37,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460588525] [2021-11-07 02:18:37,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460588525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:37,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [212516287] [2021-11-07 02:18:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:37,313 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:37,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:18:37,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:18:37,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:18:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:39,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:39,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:18:41,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:18:42,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [212516287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:42,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:18:42,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:18:42,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269929198] [2021-11-07 02:18:42,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:18:42,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:18:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:18:42,635 INFO L87 Difference]: Start difference. First operand 4478 states and 5904 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:42,778 INFO L93 Difference]: Finished difference Result 4478 states and 5904 transitions. [2021-11-07 02:18:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:18:42,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-07 02:18:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:42,808 INFO L225 Difference]: With dead ends: 4478 [2021-11-07 02:18:42,808 INFO L226 Difference]: Without dead ends: 4476 [2021-11-07 02:18:42,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:18:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2021-11-07 02:18:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4476. [2021-11-07 02:18:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4439 states have (on average 1.319666591574679) internal successors, (5858), 4449 states have internal predecessors, (5858), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 02:18:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 5902 transitions. [2021-11-07 02:18:42,977 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 5902 transitions. Word has length 139 [2021-11-07 02:18:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:42,979 INFO L470 AbstractCegarLoop]: Abstraction has 4476 states and 5902 transitions. [2021-11-07 02:18:42,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 5902 transitions. [2021-11-07 02:18:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 02:18:42,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:42,982 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:43,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:43,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:43,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:43,406 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:18:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2012357580, now seen corresponding path program 1 times [2021-11-07 02:18:43,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:43,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878828424] [2021-11-07 02:18:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:43,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:43,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:43,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:43,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:18:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:45,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:18:45,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:18:46,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:18:47,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:47,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878828424] [2021-11-07 02:18:47,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878828424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:47,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [691946721] [2021-11-07 02:18:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:47,692 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:18:47,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:18:47,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:18:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:49,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:49,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:18:51,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:18:52,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [691946721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:52,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:18:52,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:18:52,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753575561] [2021-11-07 02:18:52,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:18:52,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:18:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:18:52,769 INFO L87 Difference]: Start difference. First operand 4476 states and 5902 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:52,931 INFO L93 Difference]: Finished difference Result 4476 states and 5902 transitions. [2021-11-07 02:18:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:18:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 02:18:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:52,958 INFO L225 Difference]: With dead ends: 4476 [2021-11-07 02:18:52,958 INFO L226 Difference]: Without dead ends: 4474 [2021-11-07 02:18:52,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:18:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2021-11-07 02:18:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4474. [2021-11-07 02:18:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4438 states have (on average 1.3195132942767012) internal successors, (5856), 4447 states have internal predecessors, (5856), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 02:18:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 5900 transitions. [2021-11-07 02:18:53,307 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 5900 transitions. Word has length 140 [2021-11-07 02:18:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:53,308 INFO L470 AbstractCegarLoop]: Abstraction has 4474 states and 5900 transitions. [2021-11-07 02:18:53,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 5900 transitions. [2021-11-07 02:18:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 02:18:53,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:53,311 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:53,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:53,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:53,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:53,722 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:18:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2041404095, now seen corresponding path program 1 times [2021-11-07 02:18:53,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:53,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507294987] [2021-11-07 02:18:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:53,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:53,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:53,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:53,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:18:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:18:56,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:18:56,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:18:57,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:57,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507294987] [2021-11-07 02:18:57,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507294987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:57,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [107209711] [2021-11-07 02:18:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:57,987 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:57,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:18:57,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:18:57,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:18:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:00,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:00,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:01,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:03,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [107209711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:03,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:03,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:19:03,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106369561] [2021-11-07 02:19:03,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:03,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:03,431 INFO L87 Difference]: Start difference. First operand 4474 states and 5900 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:03,882 INFO L93 Difference]: Finished difference Result 13148 states and 17486 transitions. [2021-11-07 02:19:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:03,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-07 02:19:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:03,942 INFO L225 Difference]: With dead ends: 13148 [2021-11-07 02:19:03,943 INFO L226 Difference]: Without dead ends: 8801 [2021-11-07 02:19:03,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8801 states. [2021-11-07 02:19:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8801 to 8797. [2021-11-07 02:19:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8797 states, 8732 states have (on average 1.3222629409070088) internal successors, (11546), 8744 states have internal predecessors, (11546), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (88), 40 states have call predecessors, (88), 44 states have call successors, (88) [2021-11-07 02:19:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 11678 transitions. [2021-11-07 02:19:04,490 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 11678 transitions. Word has length 141 [2021-11-07 02:19:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:04,490 INFO L470 AbstractCegarLoop]: Abstraction has 8797 states and 11678 transitions. [2021-11-07 02:19:04,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 11678 transitions. [2021-11-07 02:19:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 02:19:04,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:04,495 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:04,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:04,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:04,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:04,910 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1141002870, now seen corresponding path program 1 times [2021-11-07 02:19:04,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:04,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034769284] [2021-11-07 02:19:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:04,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:04,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:04,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:04,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:19:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:07,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:07,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:08,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:09,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:09,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034769284] [2021-11-07 02:19:09,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034769284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:19:09,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1884076327] [2021-11-07 02:19:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:09,501 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:19:09,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:19:09,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:19:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:11,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:11,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:13,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:14,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1884076327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:14,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:14,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:19:14,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512573907] [2021-11-07 02:19:14,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:14,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:14,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:14,968 INFO L87 Difference]: Start difference. First operand 8797 states and 11678 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:15,346 INFO L93 Difference]: Finished difference Result 8797 states and 11678 transitions. [2021-11-07 02:19:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:15,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-07 02:19:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:15,378 INFO L225 Difference]: With dead ends: 8797 [2021-11-07 02:19:15,378 INFO L226 Difference]: Without dead ends: 8795 [2021-11-07 02:19:15,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2021-11-07 02:19:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 8795. [2021-11-07 02:19:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8795 states, 8731 states have (on average 1.3221853166876647) internal successors, (11544), 8742 states have internal predecessors, (11544), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (88), 40 states have call predecessors, (88), 44 states have call successors, (88) [2021-11-07 02:19:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8795 states to 8795 states and 11676 transitions. [2021-11-07 02:19:15,839 INFO L78 Accepts]: Start accepts. Automaton has 8795 states and 11676 transitions. Word has length 142 [2021-11-07 02:19:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:15,840 INFO L470 AbstractCegarLoop]: Abstraction has 8795 states and 11676 transitions. [2021-11-07 02:19:15,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8795 states and 11676 transitions. [2021-11-07 02:19:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 02:19:15,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:15,843 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:15,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:16,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:16,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:16,266 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1011370987, now seen corresponding path program 1 times [2021-11-07 02:19:16,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:16,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846339477] [2021-11-07 02:19:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:16,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:16,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:16,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:16,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:19:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:18,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:18,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:19,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:20,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:20,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846339477] [2021-11-07 02:19:20,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846339477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:19:20,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [458052567] [2021-11-07 02:19:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:20,816 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:20,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:19:20,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:19:20,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:19:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:23,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:23,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:24,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:26,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [458052567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:26,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:26,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:19:26,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753426562] [2021-11-07 02:19:26,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:26,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:26,592 INFO L87 Difference]: Start difference. First operand 8795 states and 11676 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:26,928 INFO L93 Difference]: Finished difference Result 8795 states and 11676 transitions. [2021-11-07 02:19:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:26,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-07 02:19:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:26,957 INFO L225 Difference]: With dead ends: 8795 [2021-11-07 02:19:26,957 INFO L226 Difference]: Without dead ends: 8786 [2021-11-07 02:19:26,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2021-11-07 02:19:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 8786. [2021-11-07 02:19:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8786 states, 8723 states have (on average 1.3221368795139288) internal successors, (11533), 8733 states have internal predecessors, (11533), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (88), 40 states have call predecessors, (88), 44 states have call successors, (88) [2021-11-07 02:19:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 11665 transitions. [2021-11-07 02:19:27,398 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 11665 transitions. Word has length 143 [2021-11-07 02:19:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:27,399 INFO L470 AbstractCegarLoop]: Abstraction has 8786 states and 11665 transitions. [2021-11-07 02:19:27,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 11665 transitions. [2021-11-07 02:19:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 02:19:27,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:27,403 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:27,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:27,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:27,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:27,826 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:27,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1272583308, now seen corresponding path program 1 times [2021-11-07 02:19:27,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:27,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818187944] [2021-11-07 02:19:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:27,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:27,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:27,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:19:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:30,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:31,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:32,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:32,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818187944] [2021-11-07 02:19:32,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818187944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:19:32,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [970921521] [2021-11-07 02:19:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:32,793 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:32,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:19:32,794 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:19:32,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:19:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:35,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:35,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:36,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:36,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [970921521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:36,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:36,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:19:36,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491891183] [2021-11-07 02:19:36,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:36,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:36,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:36,417 INFO L87 Difference]: Start difference. First operand 8786 states and 11665 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:37,293 INFO L93 Difference]: Finished difference Result 25088 states and 33377 transitions. [2021-11-07 02:19:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:37,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-07 02:19:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:37,346 INFO L225 Difference]: With dead ends: 25088 [2021-11-07 02:19:37,347 INFO L226 Difference]: Without dead ends: 16429 [2021-11-07 02:19:37,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2021-11-07 02:19:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 16417. [2021-11-07 02:19:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16417 states, 16296 states have (on average 1.3242513500245459) internal successors, (21580), 16312 states have internal predecessors, (21580), 88 states have call successors, (88), 28 states have call predecessors, (88), 28 states have return successors, (176), 80 states have call predecessors, (176), 88 states have call successors, (176) [2021-11-07 02:19:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 21844 transitions. [2021-11-07 02:19:38,389 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 21844 transitions. Word has length 154 [2021-11-07 02:19:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:38,389 INFO L470 AbstractCegarLoop]: Abstraction has 16417 states and 21844 transitions. [2021-11-07 02:19:38,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 21844 transitions. [2021-11-07 02:19:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 02:19:38,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:38,396 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:38,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:38,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:38,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:38,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash -600309973, now seen corresponding path program 1 times [2021-11-07 02:19:38,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:38,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127394179] [2021-11-07 02:19:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:38,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:38,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:38,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:19:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:41,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:41,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:42,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:19:44,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:44,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127394179] [2021-11-07 02:19:44,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127394179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:19:44,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [744638580] [2021-11-07 02:19:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:44,076 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:44,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:19:44,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:19:44,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:19:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:47,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:47,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:47,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:19:48,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [744638580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:48,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:48,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 02:19:48,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862608082] [2021-11-07 02:19:48,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:19:48,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:19:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:19:48,501 INFO L87 Difference]: Start difference. First operand 16417 states and 21844 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:55,200 INFO L93 Difference]: Finished difference Result 34616 states and 46355 transitions. [2021-11-07 02:19:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:19:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-07 02:19:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:55,260 INFO L225 Difference]: With dead ends: 34616 [2021-11-07 02:19:55,260 INFO L226 Difference]: Without dead ends: 18326 [2021-11-07 02:19:55,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:19:55,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2021-11-07 02:19:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 16429. [2021-11-07 02:19:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16429 states, 16308 states have (on average 1.3240127544763307) internal successors, (21592), 16324 states have internal predecessors, (21592), 88 states have call successors, (88), 28 states have call predecessors, (88), 28 states have return successors, (176), 80 states have call predecessors, (176), 88 states have call successors, (176) [2021-11-07 02:19:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16429 states to 16429 states and 21856 transitions. [2021-11-07 02:19:56,269 INFO L78 Accepts]: Start accepts. Automaton has 16429 states and 21856 transitions. Word has length 161 [2021-11-07 02:19:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:56,270 INFO L470 AbstractCegarLoop]: Abstraction has 16429 states and 21856 transitions. [2021-11-07 02:19:56,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16429 states and 21856 transitions. [2021-11-07 02:19:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 02:19:56,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:56,276 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:56,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:56,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:56,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:56,698 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1288395375, now seen corresponding path program 1 times [2021-11-07 02:19:56,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:56,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806082964] [2021-11-07 02:19:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:56,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:56,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:56,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:19:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:59,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:59,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:00,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:02,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:02,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806082964] [2021-11-07 02:20:02,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806082964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:02,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1209037133] [2021-11-07 02:20:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:02,003 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:02,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:02,004 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:02,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 02:20:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:05,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:20:05,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:20:06,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:20:07,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1209037133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:07,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:07,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 17 [2021-11-07 02:20:07,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78046743] [2021-11-07 02:20:07,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 02:20:07,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 02:20:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:20:07,003 INFO L87 Difference]: Start difference. First operand 16429 states and 21856 transitions. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:17,006 INFO L93 Difference]: Finished difference Result 41020 states and 54691 transitions. [2021-11-07 02:20:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 02:20:17,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-07 02:20:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:17,070 INFO L225 Difference]: With dead ends: 41020 [2021-11-07 02:20:17,070 INFO L226 Difference]: Without dead ends: 24718 [2021-11-07 02:20:17,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2021-11-07 02:20:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24718 states. [2021-11-07 02:20:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24718 to 16457. [2021-11-07 02:20:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16457 states, 16336 states have (on average 1.3234573947110675) internal successors, (21620), 16352 states have internal predecessors, (21620), 88 states have call successors, (88), 28 states have call predecessors, (88), 28 states have return successors, (176), 80 states have call predecessors, (176), 88 states have call successors, (176) [2021-11-07 02:20:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16457 states to 16457 states and 21884 transitions. [2021-11-07 02:20:18,347 INFO L78 Accepts]: Start accepts. Automaton has 16457 states and 21884 transitions. Word has length 163 [2021-11-07 02:20:18,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:18,348 INFO L470 AbstractCegarLoop]: Abstraction has 16457 states and 21884 transitions. [2021-11-07 02:20:18,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 16457 states and 21884 transitions. [2021-11-07 02:20:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 02:20:18,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:18,355 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:18,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:18,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:18,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:18,780 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:20:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1348424240, now seen corresponding path program 1 times [2021-11-07 02:20:18,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:18,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833532388] [2021-11-07 02:20:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:18,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:18,783 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:18,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:20:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:22,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:22,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:23,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:24,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:24,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833532388] [2021-11-07 02:20:24,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833532388] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:24,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2012995405] [2021-11-07 02:20:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:24,148 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:24,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:24,153 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:24,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:20:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:29,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:29,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:29,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:30,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2012995405] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:30,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397603749] [2021-11-07 02:20:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:30,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:20:30,789 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:20:30,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 02:20:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:33,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:20:34,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:20:36,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397603749] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:36,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:20:36,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 02:20:36,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969917480] [2021-11-07 02:20:36,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:20:36,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:36,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:20:36,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:20:36,089 INFO L87 Difference]: Start difference. First operand 16457 states and 21884 transitions. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:50,381 INFO L93 Difference]: Finished difference Result 73948 states and 98766 transitions. [2021-11-07 02:20:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:20:50,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-07 02:20:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:50,513 INFO L225 Difference]: With dead ends: 73948 [2021-11-07 02:20:50,514 INFO L226 Difference]: Without dead ends: 57618 [2021-11-07 02:20:50,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:20:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57618 states. [2021-11-07 02:20:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57618 to 47667. [2021-11-07 02:20:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47667 states, 47322 states have (on average 1.3172308862685431) internal successors, (62334), 47362 states have internal predecessors, (62334), 256 states have call successors, (256), 84 states have call predecessors, (256), 84 states have return successors, (856), 232 states have call predecessors, (856), 256 states have call successors, (856) [2021-11-07 02:20:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47667 states to 47667 states and 63446 transitions. [2021-11-07 02:20:54,496 INFO L78 Accepts]: Start accepts. Automaton has 47667 states and 63446 transitions. Word has length 163 [2021-11-07 02:20:54,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:54,496 INFO L470 AbstractCegarLoop]: Abstraction has 47667 states and 63446 transitions. [2021-11-07 02:20:54,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 47667 states and 63446 transitions. [2021-11-07 02:20:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 02:20:54,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:54,502 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:54,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:54,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:54,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:55,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:20:55,118 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:20:55,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash 906736737, now seen corresponding path program 1 times [2021-11-07 02:20:55,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:55,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034089687] [2021-11-07 02:20:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:55,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:55,121 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 02:20:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:58,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:58,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:20:59,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:21:01,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:01,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034089687] [2021-11-07 02:21:01,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034089687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:01,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1924232215] [2021-11-07 02:21:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:01,175 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:01,176 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:01,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 02:21:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:06,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:06,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:21:07,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 02:21:08,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1924232215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:08,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064894851] [2021-11-07 02:21:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:08,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:21:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:08,601 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:21:08,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2575dd7-bf42-4953-9810-5c61280eaead/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 02:21:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:11,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:21:12,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:21:14,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064894851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:14,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:21:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 02:21:14,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582058627] [2021-11-07 02:21:14,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:21:14,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:21:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:21:14,024 INFO L87 Difference]: Start difference. First operand 47667 states and 63446 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:36,117 INFO L93 Difference]: Finished difference Result 178674 states and 239706 transitions. [2021-11-07 02:21:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:21:36,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-07 02:21:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:36,677 INFO L225 Difference]: With dead ends: 178674 [2021-11-07 02:21:36,677 INFO L226 Difference]: Without dead ends: 131134 [2021-11-07 02:21:36,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:21:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131134 states.